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KERATIN AMINO ACIDS.

Valuable / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING

Keratin Amino Acids are potent humectants and barrier enhancers, comprising small-sized proteins that effectively penetrate the skin. They are instrumental in significantly boosting skin hydration, improving elasticity, and contributing to a visibly plumper, smoother complexion, thereby supporting overall skin resilience.

Summary

Skin conditioning Humectant Barrier Support Texture Enhancer Strengthener Soother Anti-Aging Agent

Science

Mechanism of Action

Due to their low molecular weight, Keratin Amino Acids readily absorb into the stratum corneum, functioning as powerful humectants to draw and retain moisture, thereby alleviating dryness and enhancing skin suppleness. They actively fortify the skin's natural barrier, improving hydration and elasticity, which yields significant anti-aging benefits. These amino acids augment the skin's Natural Moisturizing Factor (NMF) and support the structural integrity of keratin, collagen, and elastin, facilitating natural healing processes and assisting in optimal pH regulation.

Research

Clinical Evidence

Medium confidence
Effective range 0.5–2%
Optimal

N/A

Key findings

  1. 01 Topical application of Keratin Amino Acids within the 0.5% to 2% concentration range has been clinically established as safe and well-tolerated on the skin.
  2. 02 In a 90-day randomized, double-blind, placebo-controlled study, daily oral supplementation of a feather keratin hydrolysate (500-1000 mg/day) in healthy women significantly improved key facial skin metrics, including reduced roughness and wrinkle features, enhanced deep skin moisturization, increased maximum elongation and elasticity, and improved skin thickness, density, and gloss.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Optimal stability is typically maintained when formulated within a pH range of 4.5 to 6.5.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
2%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that keratin-derived ingredients, including Keratin Amino Acids, are safe in current practices of use and concentration, up to a maximum topical concentration of 2%. They are generally well-tolerated, non-carcinogenic, non-sensitizing, and non-comedogenic, exhibiting high compatibility and low irritation. However, animal-derived Keratin Amino Acids may potentially cause allergic reactions if not thoroughly refined, necessitating patch tests for individuals with sensitive skin prior to full application.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Keratin Amino Acids are a valuable ingredient for comprehensive skin improvement, effectively enhancing hydration, barrier function, and elasticity with a low risk of irritation across all skin types.

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