Sustainable Cashmere: Buying Guide, Care & Ethical Brands
Cashmere, the precious fibre born on the high plateaus of the Himalayas, embodies the perfect union of softness and timeless elegance. Yet behind this luxurious appearance lies a complex reality in which ethical questions and sustainability are intertwined. Since 1918, Coulange has championed a vision of sustainable cashmere that honours both those who work it and the planet, turning every piece into a legacy to pass on. This guide shows you how to recognise genuine cashmere of quality, care for it so that it lasts for decades, and choose brands committed to ethical production. A philosophy in which true luxury goes hand in hand with responsibility.
Understanding Cashmere: An Exceptional Fibre
Cashmere comes from the soft undercoat of Capra hircus goats, gathered by combing each spring. Its rarity – one goat produces only 150g of usable down per year – explains its value. Unlike merino wool, which is more common and hard-wearing, cashmere offers unrivalled lightness and eight times greater insulating power. This fundamental difference makes it a noble material, demanding particular attention both in its selection and in its care. At Coulange, every fibre is meticulously sorted to keep only the longest strands, which ensure softness and resilience.
The Importance of Sustainable and Ethical Cashmere
Choosing sustainable cashmere goes beyond textile quality alone: it is a committed act. Intensive goat farming has caused alarming desertification in Mongolia, while some workshops still practise “fast cashmere” under precarious working conditions. Ethical cashmere requires full traceability of pastoral herds that respect ecosystems, fair pay for herders and spinners, and non-polluting dyeing processes. As our article on the principles of slow fashion highlights, this approach turns your purchase into support for a virtuous supply chain.
How to Recognise Genuine Quality Cashmere
Genuine cashmere is distinguished by precise characteristics: a fibre fineness below 19 microns (a human hair = 75 microns), a minimum length of 34mm for good structure, and a tight weave. Beware of ambiguous labels (“cashmere blend”) or abnormally low prices. Test the material: authentic cashmere does not itch and recovers its shape after stretching. Coulange pieces, such as this grey cashmere coat, use exclusively grade A fibres, for lasting softness and resistance to pilling.
Care Guide: How to Wash and Preserve Your Cashmere
Washing cashmere requires specific precautions to preserve its noble character:
- Use a pH-neutral detergent made for woollens
- Hand wash in lukewarm water (30° max) without rubbing
- Rinse in cold water, adding a spoonful of white vinegar to fix the dyes
- Drain without wringing, pressing gently between two towels
- Dry flat, away from direct light
Avoid snags by storing your pieces folded rather than on a hanger. These gestures, detailed in our care secrets, triple the lifespan of your cashmere. 
Sustainable Cashmere Brands: Our Committed Selection
Choosing a sustainable cashmere brand means checking three commitments: transparency on the origin of the fibres, environmental certifications (GOTS, OEKO-TEX), and local production. Among the pioneering houses, Coulange stands out for its manufacturing in France and its selection of suppliers practising rotational grazing. Our cashmere cloth jacket T41 illustrates this ethic: a biodegradable cupro lining, natural dyes, and a design built for lifetime repair. To buy sustainable cashmere, favour timeless pieces such as this women’s grey coat, designed to span the decades without going out of style.
Investing in sustainable cashmere means embracing a conscious elegance that honours the people who made it and the land that gave it. At Coulange, every piece embodies this French heritage in which savoir-faire and environmental responsibility come together. We invite you to discover our ethical cashmere collection, designed to become the treasures of tomorrow, and to take your approach further with our guide to responsible buying.