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Moumoujus

LINSEED ACID.

Valuable CAS 68424-45-3 / CLEANSING, SKIN CONDITIONING - EMOLLIENT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Linseed Acid, rich in beneficial fatty acids such as alpha-linolenic and linoleic acid, is a multi-functional ingredient known for its soothing, protective, and barrier-strengthening properties. It supports overall skin health by addressing inflammation and improving hydration, while also contributing to skin cleansing and conditioning.

Summary

Cleansing Fragrance Functional Skin Conditioning - Emollient Surfactant - Cleansing Surfactant - Emulsifying Anti-inflammatory Antioxidant Barrier Support Sebum Regulation

Science

Mechanism of Action

Linseed Acid's efficacy stems from its primary composition of alpha-linolenic acid (ALA), linoleic acid, and oleic acid. These components deliver significant anti-inflammatory benefits, effectively reducing redness and irritation. As a potent antioxidant, it defends skin against oxidative stress, which contributes to the visible improvement of aging signs such as fine lines and wrinkles. Furthermore, it nurtures skin, optimizes sebaceous gland function, making it advantageous for managing oily, polluted, and acne-prone conditions. It also bolsters the skin's lipid barrier, enhancing hydration and minimizing transepidermal water loss (TEWL). Its surfactant properties lend it cleansing, emollient, and emulsifying capabilities.

Research

Clinical Evidence

Low confidence
Effective range 1–5%
Optimal

Effective concentrations of 1% and 5% were observed in animal studies.

Key findings

  1. 01 Studies on rats demonstrated 100% re-epithelialization of excisional wounds within 14 days following topical application of 1% or 5% linseed oil formulation.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Linseed Acid, being derived from linseed oil, contains a high proportion of alpha-linolenic acid, making it prone to oxidation. It requires protection from heat to maintain stability.

Conflicts

  • Oxidizing agents (e.g., nitrates, oxidizing acids, chlorine bleaches)
  • Strong acids
  • Alkalis
  • Zinc
  • Heat

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel has deemed Linseed Acid and its parent ingredient, Linum Usitatissimum (Linseed) Seed Oil, safe for use in cosmetics. The panel emphasized that related fatty acids are safe when products are formulated to be non-irritating and non-sensitizing. Linoleic Acid, a significant component, holds a Generally Recognized As Safe (GRAS) affirmation by the FDA.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity High

Our Assessment

Verdict

Valuable

Linseed Acid offers significant anti-inflammatory, antioxidant, and barrier-supporting benefits for various skin types, though its high comedogenicity warrants cautious use for acne-prone individuals.

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