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Aromatherapy & Essential Oils

Molecular effects of essential oils used in dermatology on the skin barrier, their roles in ceramide synthesis, and clinical evidence.

⚗️ Skin Barrier and Essential Oils: Molecular Mechanism

The skin barrier consists of a lipid matrix made up of ceramides, cholesterol, and free fatty acids found in the stratum corneum layer. Essential oils can penetrate this barrier thanks to their small molecular structures and modulate various biological processes:

  • Ceramide synthesis stimulation: Terpenoids in lavender and chamomile oils activate the ceramide synthase enzyme in keratinocytes, accelerating barrier repair.
  • Anti-inflammatory effect: Tea tree oil (terpinen-4-ol) inhibits the NF-κB signaling pathway, reducing pro-inflammatory cytokine production.
  • Antimicrobial defense: 1,8-cineole and thymol in eucalyptus and thyme oils disrupt bacterial cell membranes, exhibiting antimicrobial activity.
  • Antioxidant protection: Boswellic acids in frankincense (boswellia) oil neutralize free radicals, reducing oxidative stress.

Skin Type Guide

Concern–Oil Matching

DIY Recipes

Usage Guide

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Dilution Ratios

Face: 1-2% (6-12 drops per 30 ml of carrier oil)

Body: 2-3% (12-18 drops per 30 ml)

Sensitive skin: 0.5-1% (3-6 drops per 30 ml)

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Carrier Oils

Jojoba: Closest to the skin's natural sebum, suitable for all types

Rosehip: Rich in retinol, anti-aging

Argan: Vitamin E, for dry and mature skin

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Safety Notes

Do not apply directly; always use diluted.

Do not use photosensitive oils (citrus) before sun exposure.

Consult a doctor during pregnancy. Do a patch test; discontinue use if irritation occurs.