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Moumoujus

LANOLIN OIL.

Valuable CAS 70321-63-0 / 8038-43-5 / HAIR CONDITIONING, SKIN CONDITIONING - EMOLLIENT

Lanolin Oil is a potent emollient and occlusive agent, highly effective at creating a protective barrier on the skin to significantly reduce moisture loss. It aids in restoring the skin's lipid barrier, making it an excellent ingredient for dry, dehydrated, and sensitive skin types.

Summary

emollient occlusive moisturizer skin barrier support anti-aging wound healing support

Science

Mechanism of Action

Lanolin Oil functions primarily as an emollient and occlusive moisturizer. It forms a resilient, protective film on the stratum corneum, the skin's outermost layer. This occlusive barrier physically traps water within the skin, thereby reducing transepidermal water loss (TEWL) by 20-30%. Its unique ability to hold twice its weight in water contributes to visible skin plumping and a reduction in the appearance of fine lines. Rich in cholesterol, a vital component of the skin's natural lipid barrier, Lanolin Oil actively supports barrier restoration. It also contains vitamin D-3, offering additional benefits for skin protection, immune response, and wound healing.

Research

Clinical Evidence

High confidence
Effective range 5–40%
Optimal

15%

Key findings

  1. 01 Studies indicate optimal effectiveness for moisture retention within a 5-15% concentration range, with approximately 15% specifically noted for high efficacy.
  2. 02 Clinical observations show Lanolin significantly reduces transepidermal water loss by 20-30%.
  3. 03 Regulatory guidelines permit Lanolin in over-the-counter skin ointments at concentrations ranging from 12% to 50%.
  4. 04 Anhydrous lanolin at concentrations up to 30% has been safely utilized as a vehicle in rodent wound healing studies, demonstrating no adverse effects.

Transparency

Dusting Analysis

Not commonly dusted

Lanolin Oil is a well-established active ingredient with significant, dose-dependent emollient and occlusive properties. Its direct functional benefits make it unlikely to be included at sub-effective 'dusting' concentrations.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Lanolin is chemically sensitive to oxidation in aerobic conditions; stability can be significantly enhanced by the incorporation of antioxidants. When melting, gentle heat (preferably via a double boiler) should be employed to prevent overheating. Optimal storage conditions involve a well-filled, well-closed, light-protected container in a cool, dry environment, ensuring a normal shelf life of 2 years. Acetylated lanolin derivatives are known to decompose in oil-in-water emulsions, a characteristic that may extend to Lanolin Oil.

Conflicts

  • Less refined forms of Lanolin may contain impurities that could potentially trigger allergic reactions in highly sensitive individuals, necessitating the use of pharmaceutical-grade material.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
40%
Sensitization risk Low

The CIR Expert Panel has affirmed the safety of lanolin and its derivatives for topical human application. In 2022, reported maximum concentrations were 40% in leave-on and 10% in rinse-off cosmetic products. Lanolin Oil exhibits a very low primary irritation index (PII of 1.0 on an 8-point scale), classifying it as non-irritating to mildly irritating. Patch test reactions to pharmaceutical-grade lanolins are exceptionally rare, reported at less than 0.1%. The FDA authorizes lanolin concentrations of 12-50% in over-the-counter skin ointments.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Lanolin Oil is a valuable ingredient for its robust occlusive and emollient properties, effectively hydrating and supporting the skin's barrier, particularly beneficial for dry and sensitive skin types.

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