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Acetyl Tripeptide-45 D-phenylalanyl Octapeptide-14 Norleucyl Pentapeptide-38 Methyl Leucyl Decapeptide-26 Norleucyl Glutamyl Methyl Leucyl Isoleucinamide

This synthetic peptide, also known as Astressin-B, is a potent antagonist of corticotropin-releasing factor (CRF). It is primarily utilized in cosmetics to mitigate stress-induced hair loss (telogen effluvium) and enhance overall skin and scalp health.

Directory entry · Individual source review pending

This profile is awaiting an individual source review. Treat its ratings, dose estimates and compatibility labels as provisional; they are not medical advice or proof of a finished product’s effects.

Hair conditioning Skin conditioning Anti-inflammatory Skin regeneration Stress response modulator

Science

It acts as a potent antagonist to Corticotropin-Releasing Factor (CRF) receptors within the skin and hair follicles. By blocking these receptors, it inhibits the local stress response that can lead to hair thinning and premature entry into the telogen phase.


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Human volunteer tests reported significant efficacy in stimulating hair growth and increasing hair diameter when applied topically.
  2. 02 Animal studies demonstrated significant hair regrowth in stress-induced alopecia by blocking CRF receptors.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 4.5 – 6.5
0 7 14

Stability

Peptides are sensitive to heat and pH extremes; best stabilized in buffered aqueous solutions and stored cool to prevent hydrolysis.

Conflicts

  • Strong acids
  • Strong bases
  • Proteolytic enzymes
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Sensitization risk Low

Though not CIR-reviewed, this synthetic peptide is considered well-tolerated based on dermatological testing in cosmetic formulations.


Your Skin

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

Our Assessment

Valuable

This potent CRF antagonist is a valuable ingredient for addressing stress-induced hair loss and improving overall scalp and skin health.


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References

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