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HYDROXYCAPRYLIC ACID.

Valuable CAS 617-73-2 / SKIN CONDITIONING

Hydroxycaprylic Acid, an alpha hydroxy acid (AHA), functions as a chemical exfoliant, meticulously dissolving the cellular bonds that hold dead skin cells together. This process enhances natural cell turnover, resulting in a smoother, brighter complexion with improved elasticity and reduced appearance of fine lines. It also contributes to clearer skin by preventing impurities and stimulating collagen synthesis.

Summary

Chemical exfoliant Promotes cell turnover Improves skin elasticity Refines skin texture Brightens skin Reduces fine lines and wrinkles Prevents spots and impurities Stimulates collagen synthesis Enhances skin barrier function Hydrates skin Inhibits acne-causing bacteria Anti-inflammatory effects Depigmenting effects Enhances absorption of other skincare products

Science

Mechanism of Action

As an alpha hydroxy acid (AHA), Hydroxycaprylic Acid exfoliates by precisely reducing the ionic bond strength between dead skin cells in the stratum corneum, facilitating their natural shedding (desquamation). This action promotes new cell generation, refines skin texture, enhances elasticity, and brightens the complexion. Its acidic properties also contribute to collagen stimulation, improved skin barrier function and hydration, and can mitigate acne-causing bacteria and hyperpigmentation.

Research

Clinical Evidence

Medium confidence
Effective range 3.2–10%
Optimal

4%

Key findings

  1. 01 An in vitro assay demonstrated that Hydroxycaprylic Acid at 0.2 mol/L (approximately 3.2%) significantly increased stratum corneum extensibility (5.9 ± 0.75) in guinea pig footpad epidermis, outperforming lactic acid (3.00 ± 0.65).
  2. 02 Alpha hydroxy acids (AHAs) generally exhibit effective exfoliating properties at concentrations ranging from 4% to 10% in daily skincare formulations.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 5.5
0 7 14

Stability

Its optimal efficiency in formulations is observed within a pH range of 4.0-5.5. While AHAs generally promote higher rates of cell turnover at pH 2.8-4.8, leave-on AHA products are typically recommended at a pH below 4.0 for enhanced activity.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Moderate

The CIR Expert Panel deemed Hydroxycaprylic Acid safe at current usage levels and concentrations, provided formulations are non-irritating and non-sensitizing. For consumer products, the FDA recommends an AHA concentration below 10% to minimize adverse effects. Users should be aware of increased sun sensitivity, necessitating the use of sunscreen and protective clothing. Reported adverse reactions include burning, dermatitis, irritation, and heightened sunburn risk.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Medium
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Hydroxycaprylic Acid is a valuable AHA for enhancing skin renewal, improving texture, and addressing signs of aging and impurities, provided it is formulated and used with appropriate sun protection and concentration considerations.

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