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THYMOL

Last update on Oct 15, 2025

Thymol, derived from thyme oil, is a white crystalline ingredient providing perfuming, soothing, and anti-aging benefits in cosmetics. It has a pleasant herbal odor that gives beauty products a rejuvenating and revitalizing feel. It may also help mask the unpleasant odor of other ingredients present in a formulation. Additionally, Thymol acts as an antimicrobial agent and preservative, preventing acne on the skin and mold formation in beauty products. Thymol is often preferred in cosmetics over thyme oil, an essential oil, as Thymol is concentrated and more effective in lower quantities. This ensures that it does not overpower the fragrance and also decreases the formulation cost.

CAS Number: 89-83-8Chem/IUPAC Name: Phenol, 5-methyl-2-(1-methylethyl)-EINECS/ELINCS No: 201-944-8COSING REF No: 38597

Products with THYMOL

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Total-Dent Complex

by Biogründl

INCI: EUCALYPTOL | MENTHOL | METHYL SALICYLATE | ROSMARINUS OFFICINALIS EXTRACT | THYMOL | THYMUS VULGARIS EXTRACT
  • Sustainable option

Thymol Cryst.

by Symrise

INCI: THYMOL
  • Sustainable option

SharoSENSE™ 254

by Sharon Laboratories

INCI: PHENOXYETHANOL | CIS-3-HEXENYL METHYL CARBONATE | THYMOL
  • Sustainable option

What is THYMOL used for?

  • Perfuming - Thymol has a naturally fresh, herbal scent that elevates the sensory appeal of cosmetic and personal care products.
  • Masking - It helps neutralize unwanted odors from other ingredients in a formulation as well.
  • Denaturant - Thymol denatures alcohol, like ethanol, present in a beauty product to make it unsuitable for consumption while still preserving its effectiveness.
  • Antimicrobial/Preservative - When used in skin care, it fights off acne-causing bacteria on the skin and leaves clearer, blemish-free skin. In hair care, it helps rid the scalp of dandruff. Additionally, Thymol is a potent preservative that prevents fungal growth in beauty products, increasing their shelf life.
  • Anti-aging - Thymol is rich in antioxidants, which may help reduce the effects of environmental damage on the skin. Although not scientifically proven yet, this ingredient prevents the appearance of premature wrinkles. However, there are more effective anti-aging ingredients present in the market.
  • Anti-inflammatory - Thymol has soothing properties that help provide relief against redness and irritation.

Origin

Thymol comes from the Thymus vulgaris (thyme) plant. Its leaves first undergo steam distillation to produce thyme essential oil. This essential oil is further processed via fractional distillation or crystallization to obtain pure thymol. In its raw form, Thymol appears as white crystals and has the chemical formula C10H14O. However, for greater consistency and large-scale production, Thymol is often produced synthetically for cosmetic use. This is done by the alkylation of m-cresol.

What does THYMOL do in a formulation?

DENATURANT|
PERFUMING|
MASKING|
ANTIOXIDANT|
ANTIMICROBIAL|
PRESERVATIVE|
SOOTHING

Safety Profile

Thymol is safe and non-toxic for use up to 0.05% in leave-on products and 0.1% in rinse-off products. High concentrations may cause irritation and sensitization. While it is compatible with most skin types, patch testing is recommended for sensitive skin. Thymol must be stored in a cool and dark place to avoid oxidation and maintain stability. Additionally, it is biodegradable, making it environmentally friendly.

THYMOL technical profile

PropertyValues

Boiling Point

232°C

Melting Point

49°C - 51°C

Solubility

Slightly soluble in water; highly soluble in oil

Viscosity

Low to moderate