Blue is always green for Austria-based fiber firm Lenzing, which just unveiled its latest venture in sustainable denim. Lenzing said its new Indigo Color technology for Tencel branded Modal fibers ...

The partnership between Israeli company Sonovia and Italian denim mill PureDenim is getting support from a leader in luxury fashion. French luxury group Kering entered an agreement to develop and ...

Stony Creek Colors is convincing farmers who used to grow tobacco to switch to indigo plants and selling the natural blue dye to fabric producers, including denim giant Cone Mills. The ...

Scientists have long known the two chief ingredients of the intense blue pigment: indigo, a plant dye that's used today to color denim; and palygorskite, a type of clay. But how the Maya cooked up ...

The first challenge is that indigo dying is most efficient at a high pH – most denim mills use a pH of around 10.5. But the enzyme used in Dueber’s team’s process only works to a pH of 8.

Though jeans are still dyed with indigo, the natural, plant-derived pigment was used for less than 30 years after Levi Strauss started putting his famous denim pants together with rivets.

However, traditional indigo yarn dyeing processes require an average 60,000 liters of water per process and use polluting chemicals such as hydrosulfite. Israeli green-tech company Sonovia developed a ...