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Moumoujus

PENTAPEPTIDE-18.

Valuable CAS - / SKIN CONDITIONING

Pentapeptide-18 is a biomimetic peptide engineered to address dynamic expression lines by modulating nerve cell activity. It functions as a neurotransmitter inhibitor, effectively reducing the intensity of muscle micro-contractions that contribute to wrinkle formation. Furthermore, it supports the skin's structural integrity by influencing cell metabolism and boosting the synthesis of vital extracellular matrix components like collagen and elastic fibers.

Summary

Cell-communicating Anti-aging Anti-wrinkle Collagen synthesis booster Elastin synthesis booster

Science

Mechanism of Action

Pentapeptide-18 operates by binding to enkephalin receptors located on the surface of nerve cells, thereby initiating a cascade that decreases neuronal excitability. This specific interaction modulates the release of acetylcholine into the synaptic cleft, partially diminishing muscle contractions responsible for expression wrinkles. Beyond its neuromodulatory role, it also influences key signaling pathways in skin cells, fostering enhanced cell metabolism and promoting the biosynthesis of essential extracellular matrix proteins such as collagen and elastin.

Research

Clinical Evidence

Medium confidence
Effective range 0.025–10%
Optimal

3%

Key findings

  1. 01 A 2% concentration demonstrated significant wrinkle reduction in a two-month study involving twenty participants.
  2. 02 At 5%, it achieved an 11.64% reduction in wrinkle depth over 28 days when used independently. This effect was notably amplified to nearly 50% reduction when co-formulated with Argireline.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
0.025%
Red flag below
0.1%

While effective concentrations for Pentapeptide-18 can range from 0.025% up to 10% depending on specific formulation goals, studies demonstrating significant wrinkle reduction typically utilize 2% or higher. Formulations containing this ingredient at concentrations substantially below 0.1% are unlikely to provide meaningful anti-aging benefits and may be included primarily for marketing claims.

The Formula

Formulation

Solubility
Water
Optimal pH 5.5 – 6.5
0 7 14

Stability

Optimal stability is maintained within a narrow pH range of 5.5 to 6.5. It is typically supplied as a fine white powder and readily disperses in water-based systems or can be incorporated into emulsions.

Synergies

  • Argireline

Safety

Safety Profile

CIR Status
Insufficient data
Max tested
10%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel currently has insufficient data for a full safety assessment of pentapeptides, though a Draft Final Report is anticipated in late 2024. Nevertheless, Pentapeptide-18 is generally regarded as safe with an excellent tolerance profile, exhibiting no reported instances of skin irritation, allergic reactions, or serious adverse effects in available research.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Pentapeptide-18 is a valuable neuromodulating peptide for targeting expression wrinkles and supporting overall skin matrix health, particularly effective when formulated within its optimal pH range and combined with synergistic ingredients.

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