Disposing of a garment after only 15 uses increases environmental impacts and resource use by 5.8 to 6.8 times compared to 109 wears, according to Woolmark. This disparity confirms that garment longevity, a consumer choice, disproportionately impacts a product's environmental footprint. The duration of a garment's utility significantly outweighs initial production impacts. This is a critical aspect for fashion brands assessing environmental impact.
Life Cycle Assessment (LCA) is an internationally standardized methodology for quantifying environmental impacts, as stated by Nature. However, its application in the fashion industry often suffers from persistent limitations and selective scope, failing to capture the full picture of a garment's true environmental footprint.
Companies that embrace a rigorous, comprehensive approach to LCA will gain a significant competitive advantage in regulatory compliance, consumer trust, and genuine sustainability. Those that do not risk falling behind and facing increasing scrutiny as environmental accountability intensifies.
What is Life Cycle Assessment?
Life Cycle Assessment (LCA) quantifies environmental impacts across a product's entire life cycle, from raw material extraction to disposal. The process begins with the Life Cycle Inventory (LCI) phase. This involves collecting data on all inputs and outputs at each stage of a product’s existence. Inputs include energy consumption and raw material usage. Outputs include emissions to air, water, and soil, plus waste generation.
After the LCI, the Life Cycle Impact Assessment (LCIA) phase translates inventory data into key environmental impacts. This often uses established LCIA methods, like the Environmental Footprint (EF) method from the Product Environmental Footprint (PEF). Accurate data collection and appropriate impact categorization are essential. Without a robust data foundation, the entire sustainability analysis lacks credibility.
The Mechanics of Measuring Impact
A comprehensive Life Cycle Assessment employs specific scientific methods to evaluate environmental consequences, moving beyond basic data collection. One study, detailed in Nature, uses the Eco-Indicator 99 (EI99) method with LCA calculations. This assesses the impact of emissions, extractions, and land use on human health, ecosystem quality, and resource depletion. Such rigorous approaches are vital for identifying specific intervention points and prioritizing mitigation strategies.
