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ACETYL S-FEA'S VIPER PENTAPEPTIDE-1 AMIDE.

Valuable / SKIN CONDITIONING

A synthetic pentapeptide derivative of Azemiopsin from the Fea's Viper, designed to precisely target muscle contractions. It is utilized to visibly reduce the depth of mimic and age-related wrinkles.

Skin conditioning Anti-aging Muscle relaxant

Science

It acts as a reversible antagonist of muscle-type nicotinic acetylcholine receptors (mnAChR) at the neuromuscular junction. By binding, it prevents acetylcholine from initiating muscle contraction, thereby relaxing facial muscles and smoothing expression lines, similar to a Botox-like effect.


Research

High confidence
Effective range 0.01–5%
Optimal

5%

Key findings

  1. 01 Clinical studies demonstrate significant inhibition of muscle-type nAChR, resulting in muscle relaxation and a decrease in the depth of mimic and age-related wrinkles. Pentapeptide fragments exhibited high inhibitory activity (IC50 = 28 μM) in electrophysiological tests.
  2. 02 In vitro, complete blockage of current through muscle-type nAChR channels was observed at 150 μg/ml, comparable to other 'viper-like' peptides.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Peptides of this class are generally stable in aqueous solutions at slightly acidic to neutral pH. Acetylation and amidation enhance its metabolic stability against proteases.

Conflicts

  • Strong oxidizing agents
  • Proteolytic enzymes
  • Extreme pH (<3.0 or >8.0)

Safety

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Low

Preclinical evaluations indicate it is a non-depolarizing muscle relaxant with low affinity for neuronal α7 receptors, reducing potential for systemic toxicity. Animal studies showed no oral toxicity up to 160 mg/kg.


Your Skin

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

Our Assessment

Valuable

A valuable biomimetic peptide for its potent, targeted action in visibly relaxing facial muscles and smoothing expression lines.


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