Our Clothes' Carbon Footprint: A Life Cycle Analysis

Fashion's Carbon Footprint, From Field to End-of-Life

The fashion industry, like many sectors, faces the urgent need to reduce its environmental footprint. To grasp the full extent of this impact and identify relevant levers for action, a complete analysis of its value chain is essential. This review allows us to quantify greenhouse gas emissions at each stage, from raw material to the product's end-of-life.

Raw Material Production

A garment's life cycle begins with the production of its materials. Cotton and polyester, the two most commonly used fibers, have particularly heavy environmental footprints. The textile industry alone consumes nearly 25% of the world's manufactured chemicals, largely for treatments applied to conventional cotton. The cultivation of this fiber is also water-intensive, requiring up to 20,000 liters to produce a single kilogram. It is also responsible for 18% of global water pollution from pesticides.

In terms of carbon emissions, producing one kilogram of cotton generates about 5.5 kg of CO2. The footprint of polyester, a petroleum-derived material, is higher: its manufacturing emits nearly 9.5 kg of CO2 per kilogram.

The spinning and weaving stages, which transform the fiber into fabric, add to this toll. These processes are energy-intensive and often rely on fossil fuels. For instance, converting fiber into one kilogram of cotton fabric can emit an additional 1.5 kg of CO2.

Garment Manufacturing

The transformation of fabric into a garment is the manufacturing stage. This phase is far from neutral, particularly due to material loss. It is estimated that 15% to 20% of fabric is wasted during cutting operations. These scraps, often not recovered, represent a needless impact. For example, making a standard cotton shirt can generate 0.6 kg of textile waste, the production of which has already caused the emission of nearly one kilogram of CO2.

Distribution and Retail

Once the garment is produced, it must be distributed. This logistics phase, which includes international transport, storage, and final delivery, contributes to the overall carbon footprint. Depending on the distance traveled and the preferred mode of transport, this stage accounts for an average of 5% of a garment's total carbon impact. The management of returns, a phenomenon amplified by e-commerce, can add up to an additional 10% in emissions to this balance.

Product End-of-Life

The final, often overlooked, stage is the garment's end-of-life. Despite collection systems, recycling rates remain low. In France, only 35% of used textiles are actually recycled; this figure reaches 40% at the European level. The majority of clothing is therefore landfilled or incinerated, releasing the chemicals they contain as well as greenhouse gases into the environment.

Toward a Systemic Approach to Sustainable Fashion

The environmental footprint of fashion is complex and multifactorial. It is not limited to CO2 emissions but also includes water consumption, chemical pollution, and waste generation. To reduce this impact, action is needed across the entire life cycle.

Solutions exist at every link in the chain:

• Favoring lower-impact raw materials, such as organic cotton or recycled fibers.
• Optimizing production processes to reduce energy consumption and material loss.
• Rethinking logistics to minimize transportation and streamline inventory management.
• Extending the life of garments through proper care, repair, and upcycling, and ensuring better end-of-life management.

Adopting this systemic vision is the essential condition for initiating a profound transformation of the industry and progressing toward a truly responsible fashion model.