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TRIPEPTIDE-31.

Valuable CAS - / SKIN CONDITIONING

TRIPEPTIDE-31, also known as Caprooyl Tetrapeptide-3, is a biomimetic lipopeptide designed to emulate natural growth factors (TGF-ß). It actively strengthens the skin's structural integrity, leading to a visible reduction in fine lines and wrinkles while enhancing firmness and elasticity.

Cell-communicating ingredient Skin-identical ingredient Anti-aging

Science

This peptide functions by targeting and reinforcing the dermal-epidermal junction (DEJ), the crucial connection between the epidermis and dermis. It stimulates the production of key anchoring components, including collagen VII, laminin-5, and fibronectin. This action improves the skin's mechanical properties, providing increased resistance, reduced sagging, and an overall smoother, more resilient skin surface.


Research

Medium confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

No data within the provided research suggests that TRIPEPTIDE-31 is commonly used at sub-efficacious percentages for marketing purposes.


The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

TRIPEPTIDE-31 (acetate) is described as a water-soluble crystal in its raw form. However, for maximum solubility in aqueous buffers, it is recommended to first dissolve it in an organic solvent, such as ethanol, before diluting it into the aqueous phase. A 1:3 solution of ethanol:PBS at pH 7.2 has demonstrated a solubility of 0.25 mg/ml. No specific optimal pH range for broader stability has been identified.


Safety

CIR Status
Not reviewed
Sensitization risk Low

TRIPEPTIDE-31 (Caprooyl Tetrapeptide-3) is characterized by an exceptional safety profile, deemed non-invasive, and suitable for sensitive skin. It is recognized by the FDA with UNII LZI0HJ3K2R. SkinSAFE rates it as Teen SAFE, Lip SAFE, Baby SAFE, Eyelid SAFE, Common Preservative Free, and Irritant Free. No explicit maximum safe concentration has been established by regulatory bodies like CIR or SCCS in the provided data.


Your Skin

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

Our Assessment

Valuable

TRIPEPTIDE-31 is a valuable anti-aging peptide that visibly improves skin firmness, elasticity, and reduces wrinkles by strengthening the dermal-epidermal junction, supported by quantitative efficacy data and an excellent safety profile for all skin types.


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