Thymol

Thymol is a monoterpenoid phenol that occurs naturally in thyme and other Lamiaceae plants, and is commonly isolated for cosmetic use. It's used as a fragrance component and preservative booster, though it's notably volatile and carries a recognized risk of irritation at higher levels.
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Ingredient Snapshot

Overview
A thyme-derived compound used for scent and to help preserve formulas.
Category
Fragrance, Preservative
Type
Fragrance

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Provides a clean, herbal scent and can help products stay fresher by supporting preservative systems; may irritate very sensitive skin. Best suited to low concentrations.

Uses In Skincare & Cosmetics

Common in cleansers, scalp tonics, and deodorant formats where fragrance and freshness are desired, often alongside other preservation components.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Can cause stinging or irritation, particularly on sensitive or compromised skin; best used at low concentrations and patch tested when possible. Avoid the eye area and reduce frequency if tingling or redness appears.

Is Thymol a Good Ingredient?

It rates Fair because it provides fragrance and a preservation boost, but its volatile, phenolic nature raises a notable irritation and sensitization risk, so any benefit has to be weighed against very low use levels and sensitive-skin caution.

Products with Thymol

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