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ACETYL NORLEUCYL DIPEPTIDE-54 D-PHENYLALANYL DIPEPTIDE-25 AMIDE.

Valuable / SKIN PROTECTING

An advanced synthetic micropeptide engineered for comprehensive anti-aging effects through multi-pathway skin rejuvenation. This amidated dipeptide complex targets both inflammatory aging processes and extracellular matrix degradation simultaneously. Often abbreviated as Acetyl Dipeptide-31 Amide (AP31) in commercial formulations.

Skin Protecting Anti-aging Soothing

Science

Functions as a dual-action anti-aging peptide by downregulating inflammatory cytokines (IL-4, IL-6, TNF-alpha) while simultaneously upregulating key structural proteins including procollagen, elastin, decorin, fibronectin, and hyaluronic acid in the dermal matrix. Additionally reduces advanced glycation end products and strengthens barrier function.


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 16-week study showed significant improvements in jawline sagging, nasolabial folds, fine lines, and hyperpigmentation
  2. 02 12-week clinical trial demonstrated reduction in pre-aging signs and decreased skin glycation index

Transparency

Not commonly dusted

As a premium peptide ingredient with documented clinical efficacy, unlikely to be dusted in quality formulations, though specific concentration data is proprietary


The Formula

Solubility
Water
Optimal pH 5 – 7
0 7 14

Stability

Enhanced stability due to amidation protecting against enzymatic degradation. Must be incorporated below 40°C during cooling phase to preserve peptide structure.

Conflicts

  • Strong oxidizing agents
  • Strongly acidic environments (pH < 4.0)
  • Strongly alkaline environments

Safety

CIR Status
Not reviewed
Sensitization risk Low

Listed in EU CosIng database (ID 98053) as skin protecting agent. Clinical tolerability studies show no significant edema or erythema reactions.


Your Skin

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

Our Assessment

Valuable

A scientifically-backed multipeptide with demonstrated clinical efficacy for comprehensive anti-aging, though concentration transparency remains limited in commercial products.


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