# Environmental impact of fashion

The fashion industry, particularly manufacture and use of apparel and footwear, is a significant driver of greenhouse gas emissions and plastic pollution. During the 19th century, industrialization meant a move towards the manufacture of textiles on a large-scale, which only accelerated the environmental degradation. The rapid growth of fast fashion has led to around 80 billion items of clothing being consumed annually, with about 85% of clothes consumed in United States being sent to landfill.
Less than one percent of clothing is recycled to make new clothes. In the late 2010s it emitted 2% of world total greenhouse gases, and contributed to climate change through energy-intensive production, and deforestation for textile crops. The production and distribution of the crops, fibers, and garments used in fashion all contribute to differing forms of environmental pollution, including water, air, and soil degradation. The textile industry is the second greatest polluter of local freshwater in the world, and is culpable for roughly one-fifth of all industrial water pollution. Some of the main factors that contribute to this industrial caused pollution are the vast overproduction of fashion items, the use of synthetic fibers, the agriculture pollution of fashion crops, and the proliferation of microfibers across global water sources.
Efforts have been made by some retailers and consumers to promote sustainable fashion practices, such as reducing waste, improving energy and water efficiency, and using primarily eco-friendly materials. Counter movements, such as slow fashion, have also developed as a response to the growth of fast fashion.

## Fast fashion

Fast fashion is defined as "an approach to the design, creation, and marketing of clothing fashions that emphasizes making fashion trends quickly and cheaply available to consumers." While traditional fashion processes usually take about 6 months to design, manufacture, and market products, fast fashion completes these processes in several weeks, allowing the quickly changing demands of consumers to be met. This is enabled by global supply chains, low cost manufacturing and just in time inventory systems that enable retailers to produce and distribute clothing at a scale never before seen. Fast fashion has been enabled.
The amount of new garments bought by Americans has tripled since the 1960s. Globalization has encouraged the rapid growth of the fast fashion industry. Global retail sales of apparel in 2019 reached 1.9 trillion U.S dollars, a new high – this number is expected to double to three trillion U.S. dollars by the year 2030. The world consumes more than 80 billion items of clothing annually, a figure that is still increasing owing to the acceleration of fashion cycles and consumer demand for inexpensive yet fashionable garments.
Fast fashion is also referred to as “disposable fashion”, as trend cycles change so quickly that many consumers will only wear their items once or twice before disposing of them. Clothing is also often made with poor quality materials, dismissed by the inexpensive price point. This leads the clothing to tear, pop seams, or wear through faster than a sustainable fashion item.

### Production and disposal of waste

One concern with fast fashion is the clothes waste it produces. According to the Environmental Protection Agency, 15.1 million tons of textile clothing waste was produced in 2013 alone. In the United States, 64.5% of textile waste is discarded in landfills, 19.3% is incinerated with energy recovery, only 16.2% is recycled. When textile clothing ends up in landfills, chemicals on the clothes such as the dye can leech into the ground and cause environmental damage. When unsold clothing is burned, it releases CO₂ into the atmosphere. In 2019, France announced that it was making an effort to prevent companies from this practice of burning unsold fashion items. Fashion is produced at such high and fast rates, that more than 40% of fashion goods are sold at a markdown.
The packaging of clothing also contributes to the waste produced by the fashion industry. As online shopping, both for clothing and for other items, has become common, the amount of waste produced has totaled about 75 million tons in the United States alone. Many packaging materials are also non-recyclable.
As the popularity of fast fashion has increased, this has led to the rise of ultra-fast fashion. Ultra-fast fashion is similar to fast fashion, however the speed of production and trend cycles are sped up. The clothing is made of even worse quality than typical fast fashion items, and it is encouraged to be worn only a couple of times before disposing of it. Many of the companies with a high social media presence, such as Shein, Fashion Nova, and PrettyLittleThing, promote ultra-fast fashion.

### Slow fashion

Slow fashion is a movement that seeks to oppose fast fashion, focusing on the production and sale of sustainable clothing created with eco-friendly materials. The movement encourages purchasing clothing from local sources as opposed to large brands, as these locally-made pieces are often of a higher quality and will last longer than factory-made clothing, and will reduce pollution caused by the disposal of clothes. The slow fashion movement also challenges the ethical issues of fast fashion, such as the underpaying and overworking of factory workers, who often come from low-income countries.

## Materials

The majority of fashion's environmental impact comes from its raw materials.

### Synthetic materials

Synthetic materials in clothing require an estimated 342 million barrels of oil per year. Polyester was one of the most popular fibers used in fashion in 2017, found in about 60% of garments in retail stores and equalling about 21.3 million tons of polyester fiber. There was a 157% increase of polyester clothing consumption from 2000 to 2015. Washing polyester clothing leads to shedding of microplastics which enter water systems, including oceans.

### Cotton

Cotton is the most common crop in the world aside from food. Cotton production uses 2.5% of the world's farmland. Half of all textiles produced are made of the fiber. Cotton is a water-intensive crop, requiring 3644 cubic meters of water to grow one ton of fiber, or 347 gallons per pound. Growing cotton requires 25% of insecticides and 10-16% of pesticides of what is used globally every year. Half of the top pesticides used in growing cotton in the US are deemed likely to be carcinogenic by the United States Environmental Protection Agency. Cotton production degrades the quality of the soil, leading to exhausted fields and expansion into new areas. Expansion into new areas leads to the destruction of local habitats and the associated pollution affects biodiversity.

### Animal fibers and textiles

| Fiber | MJ of energy/kg of textile | liters of water/kg of textile |
| nylon | 250 | --- |
| acrylic | 175 | --- |
| polyester | 125 | 50,690-71,409 |
| polypropylene | 115 | --- |
| viscose | 100 | 3,000 |
| wool | 63 | 500 |
| cotton | 55 | 10,000-20,000 |
Energy use here is measured in megajoules needed to produce one kilogram of the given textile. Water use here is measured in liters of water needed to produce one kilogram of the given textile.

## Greenhouse gas emissions

In the late 2010s fashion emitted 2–4% of world total greenhouse gases, and it contributes to climate change through energy-intensive production, deforestation for textile crops and high transportation transmission. As of 2025 the United Nations Economic Commission for Europe still has a 2018 press release on their website which says 2% to 8%, despite this being criticised by BBC “More or Less” for being unsourced (they say there was a study which said 8% but it is old). According to the BBC “More or less” investigation in 2022 the best study at that time was the 2021 WRI report which gave 2%. The proportion of textile fibres used in clothing must be a factor in the calculation as some are used in other products, such as filters and seat belts.
Production of polyester emits significant amounts of greenhouse gas, followed by cotton, leather, wool, man-made cellulosic fibres and nylon.$^{:7}$ Most polyester is made in China: whereas the European Union Emissions Trading System may encourage reducing emissions prices on the Chinese national carbon trading scheme are far lower. It has been suggested that exporters to the EU should decarbonize in case clothing is included in the EU Carbon Border Adjustment Mechanism in future. More use of textile based feedstock has been suggested for polyester production. Capturing of carbon dioxide from ethylene production has been suggested. A certificatation for low-carbon polyester has been suggested.
Reducing the share of electricity from coal-fired power stations and coal in process heating in clothes manufacturing countries such as China India and Pakistan would help.

## Water

Improperly disposing of clothing can harm the environment, especially through wastewater. Chemicals from decomposing clothing can leach into the air and into the ground, affecting both groundwater and surface water. Aside from plastic pollution, textiles also contributes significantly to marine pollution. Unlike plastic, textile pollution's impact on marine life occurs in its various supply chain processes. Pollutants like pesticides and clothing manufacturing chemicals cling to particles that accumulate in the waters ecosystem and consequently enter into human food chains.

### Microfiber pollution

Plastic and synthetic textile are both created from a chemical structure called polymer. The Merriam-Webster dictionary defines polymer as “a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units.” For plastic, the common polymer found is PET, polyethylene (PE), or polypropylene (PP), whereas for textile, the polymer found the most abundant in the collection of waste is polyester and nylon textiles.
Textiles shed microfibers at every stage of their life cycle, from production, to use, to end of life disposal. These fibers end up in the soil, air, lakes, and oceans. Microfiber pollution has existed as long as the textile industry has, but only recently has it come under public scrutiny. The Ocean Wise Conservation Association produced a study discussing the textile waste. For polyester, it stated that on average, humans shed around 20 to 800 mg micro polyester waste for every kg textile washed. A smaller amount for nylon is found; for every kg of fabrics washed, around 11 to 63 mg of nylon microfiber waste are shed into bodies of water. Washing synthetic textiles releases microplastics and microfibers into the oceans. This type of waste is most commonly found from washing machine cycles, where fibers of clothes fall loose during the tumbling process. An individual domestic load of laundry can shed up to 700,000 microfibers.
The Association also released a study stating that on average, households in the United States and Canada produce around 135 grams of microfibers, which is equivalent to 22 kilotons of microfibers released to the wastewater annually. These wastewater will go through various waste water treatment plants, however, around 878 tons of those 22 kilotons were left untreated and hence, thrown into the ocean.
Textiles are the main source of microfibers in the environment. Thirty five percent of the microplastics that are found in marine ecosystems, such as shorelines, are from synthetic microfibers and nanofibers. Such microfibers affect marine life in that fish or other species in the marine ecosystems consume them, which end up in the intestine and harm the animals. Microfibers have been found in the digestive tracts of widely consumed fish and shellfish. These fish are then consumed by humans, which leads to the absorption of micro pollutants in the fish in a process called biomagnification. Predators of the affected marine species are also harmed, as they ingest the microfibers previously ingested by their prey. The yearly shellfish consumption of microplastics was found to be 11,000 pieces, and microfibers were found in eighty three percent of fish caught in one lake in Brazil. In one study, the food consumption rates decreased in crabs who were eating food with plastic microfibers, which further lead to the available energy for growth to also decrease.
Techniques to address the environmental impacts of the fashion industry include a marine algal bioabsorbent, which could be used for dye removal through rich algal surface chemistry through heteroatom containing functional groups. Many techniques or potential solutions are difficult in their implementation, for instance the accuracy of marine sediment techniques to detect microplastics is not sufficiently tested among different soil samples or sources.

### Eutrophication

Clothing often contains non-organic, excessively farmed cotton which is grown with chemicals that are known to cause eutrophication. Eutrophication is a process in which fresh water sources such as lakes and rivers become overly enriched with nutrients. This causes a dense growth of plant life that is harmful to the ecosystem, such as algae blooms. Algal blooms deplete levels of oxygen in water as they decompose, resulting in changes to the ecosystem, either through the die-off of aquatic creatures or populations moving as water becomes uninhabitable. Algal blooms can also make bodies of water unsuitable for both human consumption and recreation. Two of the main ingredients in pesticides are nitrates and phosphates, and when pesticides leak into stream systems surrounding the cropland via runoff, the nitrates and phosphates contribute to water eutrophication.

### Water use

The fashion industry consumes a large amount of water to produce fabrics and manufacture garments every year. The global fashion industry uses 93 billion cubic meters of water per year, or 20 trillion gallons. This is four percent of all freshwater withdrawal globally. This amount is set to double by 2030 if it follows the current trend. According to the United Nations Environment Programme, the fashion industry is responsible for 20 percent of global wastewater. Manufacturing a single pair of Levi jeans, will on average, consume about 3,781 liters of water. On average, producing one kilogram of textiles requires 200 liters of water.

## Sustainability efforts

The consumer use phase in the life cycle of clothing and other textiles is a significant area of impact, yet is often overlooked. While there is minimal research into energy efficient washers and dryers as a method of reducing impact on the consumer side, wearing garments for 9 months longer could cut overall waste by 22% and water use by 33%. On the producer side, choosing to make garments in popular colors and designs that consumers are more likely to buy is both a financially and environmentally responsible choice. Designing clothing that is more likely to be purchased can reduce waste on the production side. In 2018 the fashion retailer H&M ended up with $4.3 billion of unsold merchandise. Other retailers, such as Patagonia, have made efforts to create more sustainable clothing by using eco-friendly materials, such as organically-farmed cotton and polyester made from recycled plastic bottles.
In order to extend the life cycle of garments and slow rates of production and overconsumption, business models such as 'clothing libraries' have been considered. These businesses collect pieces both from local shops and companies, and allow customers, who pay for a monthly subscription, to borrow clothes for a certain period of time. Business startups such as these have been tested in the Netherlands and Sweden, but there are concerns that clothing libraries will have little to no effect on reducing the effects of fast fashion.