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BENZYLSULFONYL D-SERYL HOMOPHENYLALANINE AMIDINOBENZAMIDE ACETATE.

Valuable / SKIN CONDITIONING

A sophisticated synthetic tetrapeptide designed to fortify the skin's biological shield by neutralizing degradative enzymes. It functions as a precision barrier-repair agent that simultaneously optimizes the cutaneous microbiome and enhances structural protein density.

Skin conditioning Barrier repair Soothing Microbiome rebalancing Anti-aging

Science

This ingredient operates as a dual inhibitor of the serine proteases Plasmin and Urokinase (uPA), preventing the enzymatic breakdown of the skin barrier and Collagen IV. It further promotes cellular cohesion by upregulating Transglutaminase 1 (TGase1) and stimulating Collagen I synthesis, while rebalancing the skin microbiome by favoring beneficial Staphylococcus epidermidis over pro-inflammatory bacteria.


Research

High confidence
Effective range 0.001–1%
Optimal

1%

Key findings

  1. 01 A 28-day clinical study utilizing 1% concentration reported a 16-17% reduction in transepidermal water loss (TEWL) and a significant improvement in stratum corneum integrity (p < 0.02).
  2. 02 Recent 2024 data indicates that even at 10 ppm (0.001% pure active), the peptide significantly increases collagen density and skin elasticity while reducing wrinkle volume.

Transparency

Commonly dusted
Min. effective
0.001%
Red flag below
0.0001%

Because this peptide is physiologically active at extremely low concentrations (10 ppm), it is frequently used at trace levels for marketing claims. However, to achieve the clinically validated 16-17% reduction in TEWL, a 1% concentration of the commercial blend is the established benchmark.


The Formula

Solubility
Water
Optimal pH 2.6 – 6
0 7 14

Stability

The molecule is most stable in acidic environments; commercial solutions are typically maintained at pH 2.6-3.6 to ensure long-term peptide integrity.

Synergies

  • Ceramides
  • Niacinamide
  • Glycerin
  • Hyaluronic Acid

Conflicts

  • Strong oxidizing agents
  • Extreme alkaline conditions

Safety

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Low

Approved as a New Cosmetic Ingredient (NCI) in China (2022). Data suggests it is non-toxic and non-sensitizing at recommended use levels.


Your Skin

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

Our Assessment

Valuable

An exceptional biotech peptide for compromised or aging skin that provides measurable improvements in barrier resilience and collagen density.


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