What it is
Thymus Vulgaris Leaf Water is the water-based fraction recovered from thyme leaves, typically as a hydrosol or infusion. In formulations it serves as part of the water phase and contributes a light conditioning and toning effect. Because it is highly diluted, it is used for its sensory and botanical positioning rather than as an active concentrate.
Safety & warnings
Thyme-derived materials can contain residual aromatic constituents from the plant, so trace amounts of naturally occurring fragrance compounds may be present and could pose a sensitization concern for individuals reactive to thyme or related Lamiaceae botanicals. As a dilute leaf water rather than the concentrated essential oil, exposure to those constituents is generally low. It is water-based and not considered comedogenic.
Origin & sourcing
Derived from the leaves of Thymus vulgaris, a culinary and aromatic herb in the mint family. The leaf water is generally produced as a byproduct of steam distillation (the aqueous phase separated from the essential oil) or by aqueous infusion of the leaves.
Questions everyone asks
Is thyme leaf water the same as thyme essential oil?
No. The leaf water is the dilute aqueous fraction, while thyme essential oil is the concentrated volatile oil. The leaf water carries only trace aromatic compounds by comparison.
What does it do in a sunscreen?
It functions as part of the water phase, offering light skin conditioning and a botanical, herbal positioning rather than contributing to UV protection.