What it is
Thymus vulgaris flower/leaf extract is derived from the aromatic herb common thyme and contains polyphenols and other aromatic compounds. In formulations it is used at low levels for its antioxidant and conditioning properties. Because thyme is aromatic, the extract can carry naturally occurring fragrant constituents.
Safety & warnings
Thyme extract can contain naturally occurring aromatic and potentially sensitizing constituents, so it may be a concern for individuals prone to fragrance or botanical sensitivity. It is typically used at low levels. Patch testing is reasonable for those with reactive skin; it is not regarded as comedogenic.
Origin & sourcing
Plant-derived, obtained from the flowering tops and leaves of Thymus vulgaris, a Mediterranean culinary and medicinal herb.
History
Thyme has been used since antiquity as a culinary and aromatic plant; its standardized use as a cosmetic botanical extract is a modern development.
Questions everyone asks
Can thyme extract cause irritation?
It contains naturally aromatic compounds that may sensitize reactive skin in some people, though it is used at low levels in finished products.
Why is thyme extract used in sunscreen?
It serves as an antioxidant and skin-conditioning botanical, not as a UV filter.