The groundbreaking invention of the permanent wave was accompanied for decades by a pungent odor. An odorless and much better alternative is l-cysteine. WACKER is the only company in the world to make this product biotechnically from non-animal/non-human raw materials. l-Cysteine products are manufactured from vegetarian-grade raw materials and inorganic trace elements, with the help of microorganisms.
l-Cysteine produces impressive perms in keratin – the main component of hair – via scission of the S-S bonds, and is therefore used as an active ingredient for permanent wave preparations.