The Journey of Your Jeans: Unraveling the Sustainability of Denim

Your favorite pair of jeans likely has a fascinating backstory, one that spans continents and involves a complex web of processes. From cotton farms to dye houses, wash facilities, and factories, the journey of denim is both intricate and resource-intensive. While many jeans may never be worn, they often undergo treatments like stonewashing, sanding, chemical fading, or laser distressing to achieve that coveted worn-in look.

The Environmental Impact of Denim Production

The production of denim is notorious for its heavy resource consumption. It requires significant amounts of water, energy, and chemicals, contributing to the fashion industry’s status as one of the largest producers of greenhouse gas emissions. This environmental toll has sparked a growing movement toward sustainability within the industry, prompting brands to market their jeans as “sustainable.” They often highlight the use of regenerative cotton, recycled fibers, and low-water manufacturing techniques. However, discerning the authenticity of these claims can be challenging, as sustainability lacks a universal definition and standardized metrics.

The Complexity of Sustainable Practices

Brands are increasingly aware of consumer demand for transparency and sustainability. However, the path to genuine sustainability is fraught with complexities. For instance, while some brands tout the use of regenerative cotton, the feasibility of such practices can vary significantly based on geographical and climatic conditions. Beth Jensen, chief impact officer at the nonprofit Textile Exchange, notes that many brands still lack complete visibility into their cotton sourcing, making it difficult to track labor conditions and environmental impacts.

Cotton Farming: The Starting Point

Most jeans are made from cotton, a crop that often requires extensive water, fertilizers, and pesticides. The environmental implications of cotton farming are significant, and as concerns grow, some brands are turning to regenerative practices that focus on soil health and biodiversity. However, what works in one region may not be applicable in another, complicating the quest for sustainable cotton sourcing.

The Labor and Energy-Intensive Denim Production Process

Once harvested, cotton is spun into yarn and dyed—typically with indigo—a process that also demands considerable water and chemical treatments. The fabric is then woven into denim, cut, and sewn into jeans. After this, jeans usually undergo finishing treatments to create various shades and textures. Bill Curtin, owner of BPD Washhouse in New Jersey, explains that denim finishing is divided into “wet” and “dry” processes. The wet process involves washing jeans with water and chemicals, while the dry process uses methods like laser technology to create distressing effects, which are more efficient and less labor-intensive.

Innovations in Denim Processing

Many facilities are now adopting enzyme-based alternatives and ozone technologies to reduce water usage in the finishing process. These innovations aim to lessen the environmental impact while still delivering the desired aesthetic. However, stretchy jeans often contain synthetic materials like polyester or elastane, which can shed microplastics over time, adding another layer of complexity to sustainability efforts.

The Challenges of Sustainable Denim

Fashion designer Maria McManus faced significant hurdles when trying to incorporate denim into her low-impact line. The washing process, known for its invasive water and chemical use, posed a major challenge. Instead, she opted for dark, raw denim from Japan, which required minimal processing and avoided the wash stage altogether. This decision reflects a broader trend among designers who prioritize sustainability but grapple with the realities of denim production.

Collaborations for Sustainable Solutions

A breakthrough for McManus came when she collaborated with Agolde, a larger denim brand known for its commitment to regenerative cotton farming. This partnership provided her access to infrastructure and resources that her small brand could not build alone, including connections to regenerative cotton farmers and a vetted dyeing process. However, even with these advancements, the complexities of supply chain verification and crop failures remain significant challenges.

The Price of Sustainability

The cost of sustainable denim can be steep. A pair of jeans from McManus’ brand retails for nearly $700, a reflection of small production runs and the challenges of sourcing sustainable materials. This price point raises questions about accessibility and affordability in the realm of sustainable fashion.

Navigating the Denim Market

For consumers seeking sustainable jeans, experts recommend looking for brands that provide detailed information about their sourcing and manufacturing processes. Dana Davis, a strategic fashion adviser, suggests examining whether brands discuss labor rights and manufacturing sites comprehensively, rather than just in select collections. Authenticity in sustainability claims is crucial, as “greenwashing” can obscure the truth.

Certifications and Consumer Choices

Certifications can serve as helpful indicators of sustainability, though no single label guarantees it. The B Corp certification, for instance, evaluates a company’s social and environmental performance. Additionally, tree-based fibers like lyocell may come from sources vetted by the Forest Stewardship Council (FSC), ensuring responsible sourcing.

Simple Steps Toward Sustainability

One of the most effective ways to reduce denim’s environmental footprint is also the simplest: buy fewer jeans, wear them longer, wash them less, and consider shopping secondhand. According to a life cycle assessment by Levi Strauss & Co., if just 34.2 million people in the U.S. opted for secondhand jeans instead of new ones, it could prevent approximately 1.5 billion pounds of carbon dioxide emissions—equivalent to the emissions of about 150,000 gasoline cars.

In the end, the most sustainable choice may be to utilize products that have already been made, reducing the demand for new production and its associated environmental costs.