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Moumoujus

LANOLIN WAX.

Valuable CAS 68201-49-0 / BINDING, HAIR CONDITIONING, SKIN CONDITIONING - EMOLLIENT, VISCOSITY CONTROLLING

Lanolin Wax is a highly effective occlusive and emollient agent, adept at forming a protective skin barrier to minimize moisture loss. Composed primarily of long-chain wax esters, it is valued for its moisturizing and skin-smoothing properties, contributing to improved skin texture.

Summary

Emollient Emulsifying Viscosity Controlling Occlusive Moisturizing

Science

Mechanism of Action

Lanolin Wax primarily functions as an occlusive and moisturizing agent by creating a protective film on the skin's surface. This barrier efficiently reduces transepidermal water loss (TEWL) and provides defense against environmental aggressors. Its unique composition of long-chain wax esters, derived from fatty acids and fatty alcohols, also imparts emollient, penetrating, and emulsifying properties, which together promote a softer, smoother skin appearance.

Research

Clinical Evidence

Medium confidence
Effective range 30–40%
Optimal

N/A

Key findings

  1. 01 When used as a vehicle in rodent wound healing studies (using anhydrous Lanolin, a related material), this concentration demonstrated no adverse effects.
  2. 02 Undiluted Lanolin Wax exhibited extremely low irritation potential and no evidence of sensitization in tests involving over 200 human subjects.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
The designation of Lanolin as the 2023 Allergen of the Year by the American Contact Dermatitis Society serves as a significant dusting threshold, indicating increased scrutiny and potential avoidance for certain populations.%

Despite historical safety records, Lanolin, including Lanolin Wax, has seen a rise in reported allergic reactions, leading to its 'Allergen of the Year' status. This highlights a subset of individuals—particularly those with sensitive skin, atopic dermatitis, or a history of wool allergies—who may experience allergic reactions or contact dermatitis, necessitating careful consideration in product formulation and consumer guidance.

The Formula

Formulation

Solubility
Oil
Optimal pH 5.5 – 5.5
0 7 14

Stability

Lanolin Wax exhibits chemical stability under normal storage conditions and is resistant to oxidation. Optimal stability is maintained when extreme heat and direct sunlight are avoided. It is particularly effective in forming stable water-in-oil (W/O) emulsions, even at elevated temperatures, and its stability can be further enhanced through the incorporation of antioxidants.

Synergies

  • Antioxidants (for enhanced stability)

Safety

Safety Profile

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

The CIR Expert Panel has consistently concluded Lanolin and its derivatives, including Lanolin Wax, are safe for topical application, with a Draft Final Amended Report in March 2024 reaffirming this, despite Lanolin's 2023 Allergen of the Year designation. It is also approved by the US FDA for use as a food additive and as an active ingredient in various over-the-counter (OTC) drug products. While highly refined Lanolin Wax can be hypoallergenic, individuals with sensitive skin, atopic dermatitis, or a history of wool allergies may still experience allergic reactions or contact dermatitis. Maximum reported concentrations in cosmetic leave-on products are 40%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Lanolin Wax is a valuable moisturizing and occlusive ingredient, providing significant skin barrier benefits, though its use requires careful consideration for individuals with known sensitivities or a history of wool allergy due to its recognized allergen potential.

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