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Moumoujus

BABASSU ACID.

Valuable CAS - / BUFFERING, CLEANSING, EMULSION STABILISING

Derived from the kernels of the Amazonian Babassu palm, this fatty acid complex serves as a multifunctional lipid-replenisher and texture enhancer. It bridges the gap between effective cleansing and barrier repair, providing a protective occlusive layer that mimics the skin's natural sebum.

Summary

Emollient Occlusive Surfactant Emulsion Stabilizer Buffering Agent

Science

Mechanism of Action

By integrating into the stratum corneum's lipid matrix, Babassu Acid reinforces the skin's physical barrier to significantly lower transepidermal water loss (TEWL). Its high concentration of lauric and myristic acids allows it to function as an emulsion stabilizer and mild surfactant, facilitating smooth product application while maintaining skin integrity.

Research

Clinical Evidence

Medium confidence
Effective range 0.4–1.5%
Optimal

1%

Key findings

  1. 01 Human patch testing (HRIPT) on 198 subjects confirmed zero sensitization at concentrations of 0.7%.
  2. 02 A 21-day cumulative irritation trial demonstrated that 0.4% concentration is essentially non-irritating to the dermal barrier.
  3. 03 In vivo rabbit ear models indicated potential comedogenicity at 1.5%, though human sensitization remained null.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.4%
Red flag below
0.1%

While often used as a secondary functional ingredient, concentrations below 0.4% are likely included only for label claims rather than active barrier support or surfactant properties.

The Formula

Formulation

Solubility
Oil
Optimal pH 4.5 – 7
0 7 14

Stability

Highly resistant to oxidation due to saturated fatty acid content; however, it will undergo saponification and convert to soap if formulated in environments with a pH exceeding 8.0.

Synergies

  • Squalane
  • Ceramides
  • Glycerin

Conflicts

  • Strong oxidizing agents
  • High-alkaline ingredients

Safety

Safety Profile

CIR Status
Safe as used
Max tested
14%
Pregnancy
Safe
Sensitization risk Low

Safety profile is reinforced by clinical read-across data from Coconut Acid; no significant human irritation reported in standard use.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An excellent lipid-replenishing agent for dry and sensitive profiles, though its moderate comedogenicity suggests caution for acne-prone skin.

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