Why is the soap black, and what does the birch tar ingredient do?

The distinctive black color of this soap is derived from birch tar, a functional cosmetic ingredient with a long history in Eastern European bathing culture. Birch tar is valued for its balancing effect on the scalp, helping to manage oiliness and providing a sense of thorough refreshment after washing. It works in conjunction with other herbal ingredients like burdock and nettle, which are commonly used in hair cosmetics to promote a cleaner-feeling scalp.

Beyond its color, birch tar contributes to the soap's purifying properties. When combined with soapwort saponins, it helps remove excess sebum and sweat, making it an effective choice for post-sport or post-sauna cleansing. The tar also lends a traditional, herbal aroma that many users find invigorating, particularly in warm environments like saunas.