Kromfritt
Kromfritt is an adjective used in Swedish to describe leather or leather goods produced without chromium salts in the tanning process. The term, meaning chromium-free, is commonly found on product labels to indicate an alternative to conventional chrome tanning.
Conventional chromium tanning uses chromium(III) salts to fasten tannins to collagen, producing supple, water-resistant leather and
Common kromfritt methods include vegetable tanning, which uses plant tannins, and aluminum or synthetic tanning agents.
Market use and perception vary by region and brand. Kromfritt is promoted by eco-conscious consumers, but labeling