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Active ingredients

The main component of white willow and black willow bark is salicin, and the rest are flavonoids and some phenolic components. The content of salicin can be used as an indicator of the quality of white willow bark extract.

Extraction processing method

White willow and black willow bark can be used as solvents such as water and ethanol; they can be extracted according to conventional methods; and then concentrated so that the extraction rate with water as the solvent is about 10%, and the extraction rate with 50% alcohol is about 15%.

Pharmacology

The 50% alcoholic extract of white willow bark has a strong inhibitory effect on Propionibacterium acnes and a moderate inhibitory effect on Staphylococcus aureus and Escherichia coli. Promote the proliferation of fibroblasts; Proliferation of fibroblasts; Elimination of super free radicals; Elimination of light radicals; Inhibition of B-16 cell activity; Inhibition of the activity of metalloproteinase MMP-1; Inhibition of the activity of metalloproteinol MMP-3; Inhibition of the activity of metalloproteinase MMP-9; Inhibition of hyaluronidase activity; Inhibition of methioninase activity;

Application in cosmetics&skin care products

White willow and black willow bark extracts have antibacterial and anti-inflammatory properties; they can be used to prevent and treat acne; White willow extracts can still be used as anti-wrinkle, antioxidant, moisturizer, and odor suppressant.