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Moumoujus

THYMUS SERPILLUM OIL.

Questionable CAS 84776-98-7 / PERFUMING

Thymus serpillum oil, derived from wild thyme, is a potent essential oil recognized for its multi-functional properties, including strong antimicrobial, anti-inflammatory, and antioxidant effects beneficial for various skin concerns. However, its high potency necessitates precise formulation and strict dilution for safe topical application.

Summary

Antimicrobial Anti-inflammatory Antioxidant Sebum-regulating Soothing Perfuming Wound-healing support Circulation-stimulating

Science

Mechanism of Action

This essential oil operates through multiple pathways to improve skin health. It effectively inhibits the growth of bacteria, including those implicated in acne, and exhibits fungicidal activity against strains like Candida. Its anti-inflammatory action stems from the inhibition of the 5-lipoxygenase (5-LOX) enzyme, thereby reducing skin redness, itching, and inflammation. Potent antioxidant compounds within the oil neutralize free radicals, offering protection against oxidative stress. Furthermore, it aids in regulating sebum production for balanced skin and is traditionally believed to support wound and scar healing while stimulating localized microcirculation.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a highly potent essential oil, Thymus serpillum oil is not typically 'dusted' at specific target percentages for standalone efficacy, but rather integrated in extremely low, diluted concentrations as a functional active. Its inherent high irritancy prohibits usage at higher percentages.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Essential oils are generally susceptible to oxidation when exposed to light, air, and heat, compromising their efficacy and safety profile. To mitigate irritation and maintain stability, Thymus serpillum oil requires careful storage and must always be diluted in a stable carrier oil for topical applications.

Safety

Safety Profile

CIR Status
Not reviewed
Pregnancy
Caution
Sensitization risk High

The Cosmetic Ingredient Review (CIR) has not formally assessed Thymus serpillum oil. While wild thyme has a history of traditional use, its essential oil form is classified as dermocaustic, meaning it can cause chemical burns or severe irritation upon direct contact with skin and mucous membranes. Consequently, it must be extensively diluted with a carrier oil, used in minimal doses, and avoided for prolonged periods. Direct, undiluted application is strictly prohibited. Furthermore, it is contraindicated in children and pregnant individuals. Specific components like (+)-isothujone, found in 'thyme oil wild or creeping,' are subject to IFRA restrictions (maximum 0.1000% in fragrance concentrate) due to potential neurotoxicity, underscoring the need for careful formulation and concentration limits.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

While offering notable antimicrobial, anti-inflammatory, and antioxidant benefits, the severe irritancy and contraindications of Thymus serpillum oil necessitate extreme dilution and cautious application, making its inclusion in precision skincare products a complex formulation challenge.

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