THYMOL
Thymol, listed on labels as THYMOL, is an aromatic phenolic substance. It occurs naturally in essential oils from plants, especially common thyme, *Thymus vulgaris*, and has an odour associated with the herb: herbal, spicy, and slightly medicinal.
THYMOL: what it is
Thymol, listed on labels as THYMOL, is an aromatic phenolic substance. It occurs naturally in essential oils from plants, especially common thyme, *Thymus vulgaris*, and has an odour associated with the herb: herbal, spicy, and slightly medicinal.
THYMOL names this individual molecule rather than the whole thyme essential oil. Thymol may be present in a plant-derived raw material, but the ingredient list alone does not show whether the substance in a particular product came from an essential oil or from another manufacturing route.
THYMOL: what it does in cosmetics
In cosmetics, thymol can be part of a fragrance, adding a thyme-like aromatic note to a product's scent. It is also used as a denaturant: in that role, it helps make alcohol unsuitable for drinking rather than serving as a skin perfume. In oral-care products, its aroma can contribute to the product's sensory profile.
Laboratory experiments have evaluated thymol, including tests with microorganisms and combinations with chlorhexidine. Those findings were not tests of a cosmetic applied to skin and do not show that isolated thymol treats acne, wounds, dark spots, or any disease. Seeing the name on a label is therefore not a therapeutic promise.
Products containing this ingredient
See which products include it and the name used in each composition.
