The term 'tar soap' refers to a traditional cleansing product that contains birch tar. This is a natural substance derived from birch wood, valued in Northern and Eastern European bathing culture for its deep-cleansing and purifying character. Its distinctive, smoky, earthy scent comes directly from the tar itself—it is not an added fragrance. This makes the soap a good option if you are sensitive to perfumes or prefer a product free of synthetic scents.
On the skin, birch tar is known for providing a thorough, 'clean' feeling that can help reduce the sensation of greasiness or oiliness. It is often described as leaving the skin feeling fresh and invigorated, not coated or heavy. This is further enhanced by the astringent properties of the botanical extracts (birch leaf and oak bark) in the formula, which can give a slight tightening or toning sensation after rinsing. This specific combination is what defines the traditional 'sauna soap' experience.