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Moumoujus

NONAPEPTIDE-21.

Valuable / SKIN CONDITIONING

NONAPEPTIDE-21 is a precision peptide extensively researched for its skin brightening, anti-aging, and skin conditioning properties. Based on available data, primarily pertaining to Nonapeptide-1, it works to diminish hyperpigmentation and enhance overall skin tone and elasticity.

Summary

skin brightening anti-aging skin conditioning hyperpigmentation reduction dark spot reduction age spot reduction melasma treatment

Science

Mechanism of Action

NONAPEPTIDE-21, drawing from research on Nonapeptide-1, functions as a biomimetic peptide by antagonizing the alpha-melanocyte-stimulating hormone (α-MSH). It competitively binds to the melanocortin-1 receptor (MC1R) on melanocytes, thereby preventing α-MSH from activating melanin synthesis. This action inhibits tyrosinase, a key enzyme in melanin production, leading to a significant reduction in melanin synthesis (approximately 33%). Additionally, it supports collagen synthesis for enhanced skin elasticity and may contribute to cellular turnover.

Research

Clinical Evidence

Medium confidence
Effective range 0.5–5%
Optimal

1%

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

While studies on Nonapeptide-1 have shown efficacy at extremely low active peptide concentrations (e.g., 0.0001%), supplier recommendations for formulated products typically start at 0.5% and range up to 5.0% for optimal results. Therefore, concentrations of NONAPEPTIDE-21 significantly below 0.5% in a final product may be considered 'dusting' if they do not achieve the expected benefits demonstrated by commercially recommended usage levels.

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

Optimal stability and efficacy for NONAPEPTIDE-21 are maintained within a pH range of 5.0 to 7.0. Extreme pH conditions should be avoided to preserve ingredient integrity and performance.

Conflicts

  • Paraben
  • Benzotriazolyl Dodecyl P-Cresol

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
2%
Sensitization risk Low

Based on safety data for Nonapeptide-1, this peptide is considered safe for topical cosmetic use, exhibiting a low risk of irritation or adverse reactions. Clinical studies indicate excellent tolerability across most skin types, including sensitive skin, with no obvious risks identified concerning carcinogenicity, developmental/reproductive toxicity, or allergies. It is recognized in the EU's Glossary of Common Ingredient Names (INCI), and the maximum dosage for leave-on products in China (2021) is 2.0%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

NONAPEPTIDE-21 is a valuable peptide for targeting hyperpigmentation, promoting skin brightening, and delivering anti-aging benefits. The comprehensive research, primarily conducted on Nonapeptide-1, demonstrates its efficacy across diverse skin types with a low risk of irritation, making it a promising active ingredient for precision skincare formulations.

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