Thyme extract (Thymus vulgaris) is a plant-derived ingredient valued for its thymol and carvacrol content, providing antibacterial, antifungal, and antioxidant activity. It is studied for acne and as a natural preservative or soothing agent in topical formulations.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or stinging | Uncommon | More likely with high concentrations or essential-oil forms due to phenolic compounds. |
Allergic contact dermatitis | Rare | Sensitization reported, particularly in fragrance-sensitive or Lamiaceae-allergic individuals. |
Photosensitivity | Very rare | Limited reports; generally not considered a strong phototoxic agent. |
Erythema or redness | Uncommon | Transient redness possible on sensitive or compromised skin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.