Tea Tree Oil is effective because it is naturally antibacterial. Derived from Melaleuca alternifolia, a small tree native to Australia, tea tree oil contains terpinene-4-ol. “This property has antibacterial and anti-yeast properties.

Salicylic acid is a naturally occurring compound, which can be isolated from the bark of the willow tree.

Willow bark extract has been used for thousands of years as an anti-inflammatory, antipyretic, and analgesic.