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Clean

Clean may refer to:
  • Cleaning, the process of removing unwanted substances
  • Cleanliness, the state of being clean
== Arts and entertainment ==
  • Clean (music), various musical works or artists
  • Clean (film and television), various films or TV shows titled Clean
  • Clean (literature and other media), books, games, or other media
== Science and technology == == Sports and fitness == == Other uses ==
  • Clean (brands and organizations), companies or groups named Clean
  • Clean (slang), colloquial expressions meaning pure or free of additives

General Concepts

Cleaning

Cleaning is defined as the methodical process of removing unwanted substances, such as , dust, soil, and other impurities, from objects, surfaces, or environments to achieve , purity, or functionality. This typically involves the use of tools like brushes or cloths, agents such as and detergents, or specialized methods to dislodge and eliminate contaminants. The term "cleaning" originates from the word clæne, meaning pure or free from , reflecting its longstanding association with achieving a state of purity. Historically, cleaning practices date back to ancient civilizations, where facilities exemplified communal efforts; for instance, baths from the 1st century BCE served as social hubs for washing with water, oils, and scraping tools like the to remove dirt. The evolution accelerated in the with the , which introduced mass-produced soaps and chemical agents, transforming from manual household tasks into an industrialized process to address urban sanitation challenges in growing cities. By the late 1800s, innovations like early vacuum cleaners further mechanized cleaning, laying the foundation for modern commercial and industrial applications. Cleaning methods are broadly categorized into mechanical, chemical, and thermal approaches, each suited to different contaminants and contexts. cleaning relies on physical action, such as sweeping, wiping, or scrubbing with tools to dislodge without chemical aids. Chemical cleaning employs detergents, solvents, or acids to dissolve or break down substances like grease or scale, often used in settings for precision. methods, including , apply heat to loosen residues through expansion or evaporation, effectively sanitizing surfaces while minimizing chemical use. Key concepts in cleaning include adherence to sanitation standards and consideration of environmental impacts. In food safety, the Hazard Analysis and Critical Control Points (HACCP) system provides a preventive framework to identify and control hazards during cleaning and processing, ensuring microbial reduction and compliance with regulations. Environmentally, cleaning processes contribute to water pollution through chemical runoff and high consumption; for example, traditional methods can use significant volumes of water, exacerbating scarcity in water-stressed regions, though efficient techniques like low-water scrubbing reduce usage by up to 50%. The global cleaning industry, encompassing services and products, is valued at over $600 billion in 2025, driven by demand for professional sanitation in commercial and residential sectors. Cleaning efforts ultimately contribute to achieving cleanliness, the desired state of purity resulting from these processes.

Cleanliness

Cleanliness refers to the state of being free from , , and contaminants, encompassing both visible impurities and invisible ones such as microorganisms. This condition is often assessed through metrics, including microbial load, which measures the quantity of or other pathogens on surfaces or in the air as a proxy for potential . For instance, reductions in bacterial load on hands or environmental surfaces indicate effective , aligning with broader definitions that emphasize minimizing the spread of harmful microbes rather than total sterility. Maintaining yields significant health benefits by preventing infectious diseases. Proper handwashing with , a key practice to achieve this state, can reduce diarrheal illnesses by up to 40% and respiratory infections by up to 21% in the general population. In healthcare settings, enhanced cleanliness protocols have been shown to prevent up to 50% of avoidable infections acquired during care delivery. These outcomes underscore as a foundational element of , distinct from the processes used to attain it. Culturally and religiously, cleanliness holds profound significance as a marker of purity and spiritual readiness. In , —the ritual involving washing the face, hands, arms, and feet before —ensures physical and spiritual , emphasizing as integral to worship. Hinduism similarly prioritizes ritual purity through practices like bathing in sacred waters such as the or daily to remove impurities before religious rites, viewing as essential for both physical and divine connection. In the , norms evolved dramatically in the 19th century following the acceptance of germ theory, which linked diseases to microscopic pathogens; this spurred public sanitation movements that popularized regular bathing and as societal standards. Psychologically, cleanliness influences mental through metaphors and tangible effects on . The "clean slate" concept, rooted in , suggests that physical cleansing can metaphorically erase past mental burdens, reducing feelings of guilt over transgressions or doubts about decisions by fostering a sense of renewal. Conversely, clutter and disorder—antitheses of —elevate levels; studies show that individuals perceiving their environments as cluttered experience higher throughout the day, correlating with increased anxiety and reduced focus. This interplay highlights as a tool for psychological reset and emotional regulation. Global initiatives reinforce cleanliness as a public priority, such as on , launched by in 2008 to promote soap use and combat from preventable diseases. In 2025, post-pandemic hygiene norms continue to evolve, with increased emphasis on surfaces in public spaces to sustain reduced microbial transmission amid ongoing health concerns.

Arts and Entertainment

Music

In music, "Clean" has been used as a title for various songs, often exploring themes of renewal and personal catharsis. Taylor Swift's "Clean," the closing track on her 2014 album 1989, portrays emotional recovery following a tumultuous relationship, with lyrics evoking the aftermath of a storm and a sense of finality in healing. The song, co-written by Swift and producer Jack Antonoff, features atmospheric production with swelling strings and a choir-like outro, emphasizing themes of resilience. Depeche Mode's "Clean," from their 1990 album Violator, adopts a more introspective tone, metaphorically addressing purification from past struggles amid the band's signature industrial synth-pop sound. Lyrics like "The cleanest I've been / An end to the tears" suggest a release from emotional turmoil, fitting the album's exploration of desire and redemption. Other notable tracks include Incubus's "Clean" from their 1999 breakthrough album , which delves into personal battles with and self-doubt through nu-metal riffs and introspective verses. The song's raw energy, driven by Boyd's vocals, reflects the band's shift toward success while addressing inner conflict. More recently, and Randolph's "Clean" from their 2019 collaborative album delivers motivational rap with high-energy beats, boasting about success and clarity in a boastful, party-infused style. Produced by and , it highlights the duo's fusion of grime and influences. The indie rock band , formed in 1978 in , exemplifies the term in a performative context, pioneering the and with lo-fi aesthetics and melodic hooks. Active with intermittent hiatuses until 2022, the band—comprising David Kilgour, , and Robert Scott—released key works like their 1995 album Compilation, which gathered early singles and EPs to showcase their roots. Their influence extends to acts like and , emphasizing DIY ethos and psychedelic-tinged guitar work. Notable albums titled Clean include Soccer Mommy's 2018 debut, a lo-fi release by Sophie Allison that captures youthful introspection through bedroom-recorded tracks exploring heartbreak and growth. The album's minimalist production and earned critical acclaim for its raw vulnerability. In musical terminology, "clean tone" refers to a distortion-free guitar sound achieved through amplifier settings that prioritize clarity and volume without , essential in genres like , , and for articulate note definition. Similarly, "clean vocals" denote melodic, non-aggressive singing in contrast to screamed or growled styles prevalent in metal subgenres, providing dynamic contrast and emotional range in hybrid acts like . The concept of "clean versions" of explicit tracks gained prominence in the 1990s following the RIAA's standardization of the label in 1990, prompting labels to produce edited editions sans profanity to broaden retail access and comply with store policies amid public scrutiny over lyrical content. This practice, rooted in 1985 voluntary guidelines, allowed albums like those by to reach wider audiences through censored releases. As of November 2025, Taylor Swift's "" (original and Taylor's Version) has amassed over 376 million Spotify streams, underscoring its enduring appeal in pop playlists.

Film and Television

In film and television, several works titled Clean explore themes of personal redemption and the interplay between literal and metaphorical purification, often centering on characters confronting past traumas or societal margins. The 2004 French drama Clean, directed by , follows Emily Wang (), a former rock singer who, after serving time in for and losing custody of her son, embarks on a of sobriety and reconciliation with her estranged father () while attempting to revive her music career. The film premiered at the and received acclaim for its raw portrayal of addiction recovery, earning Cheung the Best Actress award at the . The 2021 American action thriller Clean, directed by and starring as the titular garbage collector, depicts a former hitman seeking a quiet life in , only to be drawn back into violence to protect a young neighbor from a local . Co-written and produced by Brody, the film premiered at the 2021 and was released theatrically in 2022 before streaming on , where it has maintained steady viewership into 2025. Critics noted its gritty exploration of isolation and moral reckoning, drawing comparisons to . The 2022 Australian documentary , directed by Lachlan McLeod, provides an intimate look at trauma scene cleanup professional , a biohazard specialist who confronts her own abusive past and searches for her birth mother after a forces her to step away from her business. Focusing on the emotional and logistical challenges faced by such workers, the film premiered at the SXSW Film Festival in 2022, where it won the Audience Award in the Documentary Feature Competition, and later screened at the and . It highlights the unsung labor of cleaning up after suicides, crimes, and , blending Pankhurst's story with on-the-job footage. The 2025 French television series , starring as , a night-shift navigating a contentious , mounting debts, and an unexpected involvement in , adapts the series Cleaning Up into a comedy-drama . Directed by Cathy Verney and created by Claire Lemaréchal and Franck Philippon, the six-episode first season aired on starting April 4, 2025, following its world premiere at the Series Mania Festival in . Poisson's performance as the resilient yet overwhelmed protagonist has been praised for capturing the tensions of working-class life amid financial desperation. Notable short films include the 2023 entry , directed by Brandon Herron, which portrays a woman's battle against intrusive compulsive thoughts that confine her to her home, using minimalist visuals to evoke psychological entrapment. The 2024 short , written and directed by Ryan Kenton, unfolds as a following a woman's encounter that unravels her sense of security, earning the Best award at the 19th Annual SoCal Awards. Across these productions, recurring motifs of through cleansing—whether purging , , , or physical hazards—underscore narratives of , with protagonists often isolated by their labors or inner conflicts.

Literature and Other Media

In the realm of literature, "Clean: The Revolutionary Program to Restore the Body's Natural Ability to Itself" (2009) by cardiologist Alejandro Junger stands as a seminal self-help guide promoting to enhance the body's innate processes through a structured 21-day cleanse involving plant-based shakes and whole foods. The book emphasizes eliminating common allergens like , , and processed sugars to reset gut health and reduce , drawing on Junger's expertise. It gained widespread popularity, inspiring the Clean Program—a guided detox initiative that surged in adoption around 2015-2016, endorsed by celebrities such as and featured in wellness media for its focus on sustainable lifestyle shifts over extreme . Junger expanded his work with follow-up titles like "Clean Gut: The Breakthrough Plan for Eliminating the Root Cause of and Revolutionizing Your Health" (2013), which delves deeper into microbiome restoration via targeted elimination diets, and "Clean 7: Supercharge the Body's Natural Ability to Heal Itself—The One-Week Breakthrough Detox Program" (2019), offering a condensed seven-day protocol for busy individuals seeking rapid clearance. Another notable entry is "Clean: The New Science of Skin" (2023) by preventive specialist James Hamblin, which challenges conventional norms by advocating minimal washing to preserve the skin's microbial , based on his personal experiment abstaining from for a year. In , "Clean Room" (2015-2018), written by and illustrated by Jon Davis-Hunt, is a Vertigo/ series collected in volumes like "" (2016), exploring a secretive organization that uses psychological conditioning to confront personal traumas, blending elements with critiques of dynamics. The narrative follows Chloe Piers, who infiltrates the titular Clean Room—a space purportedly free of negative influences—to uncover its manipulative underbelly, earning acclaim for its sharp dialogue and atmospheric tension. Video games titled "Clean" or thematically aligned include "Clean Sweep" (upcoming), an indie 3D action RPG developed by a small team, where players embody a in a whimsical world populated by anthropomorphic cleaning products, solving puzzles and quests centered on and to "sweep" away chaos in Cleanland. Beyond print and digital media, "clean comedy" emerged as a distinct style in stand-up and audio , deliberately eschewing , , and divisive topics to appeal to broader, audiences. Comedian exemplifies this approach, building a career on observational humor about food, family, and everyday absurdities, as seen in specials like "Quality Time" (2024), which has garnered millions of streams for its relatable, inoffensive wit. In 2025, clean humor podcasts proliferated amid ongoing debates over , with shows like "Spitballers Comedy Podcast" and "The Elsa Kurt Show" gaining traction by delivering lighthearted banter without explicit language, reflecting a cultural pushback against algorithmic censorship on platforms like and . Audio series such as "Clean With Me Podcast" (launched 2023) further blend with practical advice, guiding listeners through routines with motivational narration to foster and .

Science and Technology

Clean Technology

Clean technology, also known as cleantech or green technology, encompasses processes, products, and services that minimize environmental impacts by optimizing resource use, reducing pollution, and promoting , often interchangeably referred to as sustainable technology. These innovations aim to address and while maintaining economic viability, focusing on efficiency gains in energy production, industrial operations, and waste handling. Key areas of clean technology include renewable energy systems such as solar photovoltaic panels and wind turbines, which generate power without fossil fuel emissions; clean fuels like for fuel cells and biofuels derived from organic waste; and waste management solutions, including advanced technologies that recover materials to reduce use and resource extraction. For example, enable zero-emission transportation and industrial heating, while production from or agricultural residues supports and heavy-duty vehicles. The historical development of gained momentum after the 1970s oil crises, which exposed vulnerabilities in dependency and spurred global investments in alternatives like and energy, alongside efficiency improvements in vehicles and buildings. This era led to pivotal policies, including the U.S. Clean Air Act of 1970, which set national air quality standards and has undergone amendments, such as 2025 EPA reconsiderations of vehicle standards to encourage integration and reduce tailpipe emissions. By the and , these efforts evolved into broader frameworks like international climate agreements, accelerating adoption in energy and manufacturing sectors. The global market is projected to reach $844.78 billion in 2025, up from $759.05 billion in 2024, driven by declining costs in renewables and rising demand for low-carbon solutions. Notable examples include carbon capture technologies deployed in 2024 projects, such as the initiative in , which began operations to store up to 1.5 million tonnes of CO2 per year from industrial sources, supporting the EU's Industrial Carbon Management Strategy. Government programs have been instrumental in fostering growth, exemplified by Canada's Clean Growth Program, launched in 2017 and ongoing through 2027, which allocates CAD 155 million for research, development, and demonstration projects in clean energy, , and , funding 43 initiatives by 2025 to cut emissions and enhance competitiveness. This program aligns with broader federal efforts, including 2025 budget measures that expand incentives for clean tech deployment across sectors like and infrastructure.

Technical Terminology

In scientific and engineering contexts, a clean room refers to a controlled environment designed to minimize airborne particulates, dust, and other contaminants to protect sensitive processes. These facilities are essential for industries such as , where even microscopic particles can compromise device functionality. The (ISO) 14644 series establishes the global standards for classification, defining air cleanliness by the concentration of particles of specified sizes, such as those equal to or greater than 0.5 micrometers (μm) in diameter. For instance, an ISO Class 5 cleanroom, commonly used in semiconductor fabrication, limits airborne particles ≥0.5 μm to no more than 3,520 per cubic meter of air to ensure high-purity conditions. Historically, cleanrooms were classified under the U.S. Federal Standard 209E (Fed Std 209E), which specified cleanliness levels based on particles ≥0.5 μm per cubic foot, but this standard was officially canceled on November 29, 2001, and replaced by the framework for greater international consistency and metric-based measurements. By 2025, advancements in cleanroom technology have extended to applications, incorporating ultra-high-vacuum systems and nanofabrication capabilities to handle qubit assembly in particle-free environments, as seen in new facilities like the €50 million quantum lab in equipped for industrial-scale production. Clean energy denotes electrical power generated from sources that produce negligible air pollutants or during operation, such as , and hydroelectric systems, contrasting with fossil fuel-based generation. This term emphasizes sustainability and environmental compatibility, with non-polluting attributes verified through lifecycle assessments showing emissions far below those of or plants. A key metric for evaluating clean energy viability is the levelized cost of energy (LCOE), which calculates the average net present cost of over a system's lifetime, including capital, operations, and maintenance expenses divided by total energy output; for example, unsubsidized LCOE for utility-scale photovoltaic fell to $38–$78 per megawatt-hour (MWh) in 2025, making it competitive with conventional sources. Other specialized terms incorporating "clean" include clean signal in , which describes an electrical undistorted by noise, interference, or extraneous artifacts, enabling precise in applications like audio or data transmission. In , clean data refers to datasets that are accurate, consistent, and devoid of errors such as missing values, duplicates, or outliers, which is crucial for reliable (AI) training to prevent model or degraded .

Sports and Fitness

Weightlifting Movements

The clean is a movement defined as the explosive pulling of a from the ground to a racked position across the shoulders in a single, continuous motion, forming the initial phase of and jerk competition lift alongside the . This technique demands integrated power from the legs, hips, back, and , emphasizing speed and precision to maximize lift efficiency. Originating in 1890s strongman competitions in , where performers showcased feats with heavy objects in multi-stage lifts, the clean evolved into a standardized event by the 1920s, with the modern two-handed clean and jerk debuting in the 1924 Games and standardized by 1928. It was refined into the modern squat clean to allow heavier loads through a deep receiving position. The execution of breaks down into distinct phases for optimal . The first pull initiates from the to level, involving gradual and extension while maintaining a flat back and bar proximity to to build tension without rushing. The follows, shifting the toward vertical as the bar slides up the thighs, positioning the shoulders over the bar for the impending explosion. The second pull then unleashes full and leg extension, propelling the bar vertically with triple extension of ankles, , and hips, keeping relaxed to avoid bending. The catch, or turnover, requires a rapid drop into a front to secure the bar on the deltoids, with elbows high and feet repositioned for . Finally, the recovery entails driving through the legs to stand fully upright, completing the lift. Common technical faults, such as early involvement during the second pull, disrupt momentum by shifting load from the lower body and often result in failed catches or reduced weight potential. Several variations adapt the clean for training specificity or accessibility. The power clean modifies the catch to occur above parallel (hips higher than knees), demanding a more forceful pull but reducing squat depth, ideal for developing speed in athletes with limited . The hang clean begins from a mid-thigh "hang" position, bypassing the floor pull to isolate the explosive second pull and transition, enhancing hip drive without full-range setup. Dumbbell cleans replace the with dumbbells, promoting unilateral coordination and core stabilization, often used in dynamic or space-constrained workouts. In elite Olympic contexts, such as standards for the 2028 Games under (IWF) guidelines, competitive athletes routinely execute cleans exceeding 100 kg; as of June 2025, the lightest men's weight class is 60 kg, with advanced lifters achieving around 130 kg in the clean, and females reaching 95–145 kg in the clean across categories based on historical competition data adjusted for current classes. These benchmarks reflect the lift's role in qualifying totals, where clean performance significantly influences overall scores. The clean also holds prominence in programming, where and power variations build explosive power, metabolic conditioning, and athletic coordination through high-repetition circuits, contributing to the sport's emphasis on functional fitness.

Anti-Doping and Clean Sport

Clean sport refers to athletic conducted without the use of performance-enhancing drugs or other prohibited methods, emphasizing fairness, , and athlete health through rigorous testing, , and rule enforcement. This concept is central to anti-doping efforts worldwide, where doping is defined as the occurrence of one or more anti-doping rule violations, such as the presence of prohibited substances in an athlete's sample or tampering with the testing process. Enforcement involves biological passport monitoring, out-of-competition testing, and educational programs to deter violations and promote a culture of compliance among athletes and support personnel. The (WADA), established on November 10, 1999, in , , serves as the global leader in harmonizing anti-doping policies across sports and countries. WADA's foundational document, the World Anti-Doping Code, was first adopted in 2003 and has been revised periodically to address emerging threats; the 2021 update, effective January 1, 2021, strengthened provisions on athlete accountability and data privacy. The Code's associated Prohibited List is updated annually, with the 2025 version, effective January 1, 2025, maintaining bans on methods like gene and cell doping to counter biotechnological advancements. National bodies, such as UK Anti-Doping (UKAD), established in December 2009 as the United Kingdom's independent National Anti-Doping Organization, implement these standards domestically through testing over 100,000 samples since inception and educational initiatives like the 100% me program. WADA's 2022 Annual Symposium, held June 11-12 in , highlighted innovations in anti-doping, including technological tools for detection and to bolster clean sport protections. In major events, such as the 2024 Paris Olympic Games, the enforced a zero-tolerance policy, with the International Testing Agency conducting extensive pre- and in-competition testing across disciplines, achieving an average of 90.4% athlete coverage per sport in preparatory phases. Despite these measures, challenges persist; for instance, in , the 2023 positive test for the diuretic by rider Michel Hessmann resulted in a four-year ban, underscoring ongoing vigilance against amid broader suspicions of undetected violations through 2025.

Other Uses

Brands and Organizations

Clean & Clear is a prominent skincare brand owned by , specializing in products targeted at adolescents and young adults for acne treatment and facial care. Originally introduced in the 1950s with a focus on shampoos, conditioners, and basic skincare, the brand was acquired by from in 1991, after which it narrowed its emphasis to teen-oriented dermatological solutions like cleansers, moisturizers, and spot treatments. Method is an eco-friendly household cleaning brand known for plant-based, non-toxic formulations in categories such as all-purpose cleaners, dish soaps, and laundry detergents. Founded in 2000, it gained prominence for and biodegradable ingredients, and was acquired by the Belgian company in 2012 to form a leading green cleaning entity with combined annual sales exceeding $200 million at the time. The brand was later purchased by SC Johnson in 2017, expanding its distribution while maintaining a commitment to environmental standards. Clean Water Action is a U.S.-based environmental organization dedicated to protecting through campaigns, , and litigation. Founded in 1972 during the push for the federal , it has over 500,000 members and supporters to address issues like toxic chemical , plastic waste, and industrial runoff, operating in multiple states with a focus on citizen-driven change. The CleanTech Alliance is a supporting cleantech innovation, particularly for startups in the , by fostering collaborations between businesses, investors, and policymakers. Established to advance clean energy and sustainable technologies, it hosted its 11th annual CleanTech Innovation Showcase in 2024, featuring 11 emerging companies from the CleanTech Accelerator cohort in areas like and waste reduction, alongside accelerator programs that provide business training and funding access to early-stage ventures. Clean Machine is a supplement brand specializing in plant-based, products for enthusiasts, including branched-chain (BCAAs), protein powders, and omega supplements derived from sources like fermented foods and ahiflower oil. Launched to offer non-GMO, gluten-free alternatives free of artificial additives, it emphasizes recovery and performance enhancement through clean, whole-food ingredients. These brands and organizations exemplify the commercial adoption of "clean" in branding to signal purity, , and health benefits, often integrating principles from in product development, such as biodegradable formulas and low-impact manufacturing.

Slang and Colloquial Expressions

In informal , the term "clean" features prominently in several s that convey themes of purification or honesty. The "" refers to the act of eliminating , inefficiency, or unwanted elements within an organization or group, often in the context of corporate or political . Similarly, "come clean" means to confess the truth or admit guilt, typically after concealing information, as in "He finally came clean about the mistake." As , "clean" has evolved to denote excellence, , or flawlessness in various contexts. In and scenarios, a "clean shot" describes an accurate, unobstructed without or issues, emphasizing and clarity. In communities, "clean" signifies being drug-free or abstinent from substances, reflecting a state of physical and mental purity after ; for instance, individuals may say "I've been clean for five years." This usage, while empowering for some, has drawn for implying that substance use renders a person "dirty," perpetuating . The applications of "clean" trace a from early 20th-century expressions to contemporary digital vernacular. By the , amplified its reach, with "clean girl aesthetic" emerging as a trend on platforms like , denoting a minimalist and lifestyle style—characterized by slicked-back hair, natural makeup, and —that prioritizes effortless and . This aesthetic, peaking in popularity around 2023–2025, reflects broader linguistic shifts toward valuing perceived authenticity in . The English Dictionary's 2023 updates incorporated related senses of "clean," such as thorough purification, underscoring its adaptability in modern . Additionally, 2024 saw challenges under "clean eating," where users linguistically frame unprocessed foods as morally superior choices, using phrases like "detox your plate" to promote health narratives. These evolutions overlap briefly with everyday references to physical , as in "keep it clean" for tidiness, but extend far into metaphorical realms of and style.

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