White Willow Bark Extract
Salix Alba Bark Extract is derived from the bark of the White Willow tree (Salix alba L., Salicaceae), a large tree commonly found on riverbanks. It is notable for containing natural salicylates, which are close chemical relatives of salicylic acid, as well as flavonoids and phenolic acids. Its CAS number is 84082-82-6 and EC number is 282-029-0.
The extract's salicin content gives it soothing and anti-inflammatory properties, while its flavonoids and phenolic acids contribute tonic, astringent, and antiseptic effects. It is often marketed as a natural alternative to salicylic acid, though its effectiveness as a chemical exfoliant in the small amounts typically used in cosmetics is considered questionable.
Its efficacy as a chemical exfoliant is questionable at the concentrations typically used in cosmetics; those sensitive to salicylates should exercise caution.
