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BARLEY SH-POLYPEPTIDE-25.

Valuable / SKIN CONDITIONING

A cutting-edge, plant-derived recombinant protein that mirrors human Interleukin-2 to reprogram cellular behavior. This bio-identical cytokine acts as a high-precision signaling molecule to accelerate structural repair and suppress pigment-related stress.

cell-communicating ingredient skin conditioning collagen booster brightening agent

Science

By binding specifically to IL-2 receptors on the skin's surface, it triggers a cascade of intracellular pathways (STAT, PI3K, and MAPK). This process stimulates fibroblasts to produce structural proteins while simultaneously regulating the melanogenesis cycle to prevent and correct hyperpigmentation.


Research

High confidence
Effective range 0.05–1%
Optimal

0.05%

Key findings

  1. 01 Clinical modeling at 0.05% concentration demonstrated a 38.44% increase in COL1A1 (Type I Collagen) mRNA expression.
  2. 02 In vitro studies confirm significant inhibition of MMP1, the enzyme responsible for collagen degradation.
  3. 03 Comparative trials indicate melanin inhibition potency that exceeds standard Vitamin C benchmarks.

Transparency

Commonly dusted
Min. effective
0.01%
Red flag below
0.05%

Due to its high cost and high biological activity at very low doses, many brands include it at 'label-claim' levels (below 0.01%). For measurable regenerative results, a concentration of at least 0.05% is required.


The Formula

Solubility
Water
Optimal pH 5.5 – 7.5
0 7 14

Stability

Highly thermolabile; activity degrades above 40°C. Requires cold-process formulation or advanced lipid-based encapsulation (liposomes/ethosomes) to maintain structural integrity.

Synergies

  • Hyaluronic Acid
  • Other Growth Factors
  • Niacinamide
  • Peptide complexes

Conflicts

  • Proteolytic enzymes (Proteases)
  • Strong oxidizing agents
  • Alcohol concentrations exceeding 20%
  • Extreme pH environments (<5.5 or >7.5)

Safety

CIR Status
Not reviewed
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

Bio-engineered using food-grade barley as a host, eliminating the risk of bacterial endotoxins commonly found in traditional E. coli-derived growth factors.


Your Skin

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

Our Assessment

Valuable

An elite signaling peptide that offers superior collagen synthesis and brightening benefits, provided it is formulated within a strict pH and temperature range.


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