Willow bark is a medicinal ingredient that is widely known as a modern version of elixir plant and natural aspirin, and is also a raw material used as a cosmetic ingredient. Willow bark contains a substance called Salix Alba, which helps prevent skin aging, and contains BHA, which helps to remove epidermal cells from the skin and creates space for new cells, helping to manage dead skin cells. This promotes skin regeneration, so it has a skin calming effect and a moisturizing effect that maintains moist skin by preventing evaporation of skin moisture.