Tetrapeptide-30

What is Tetrapeptide-30?

Tetrapeptide-30 (INCI: PKEK – Pro-Lys-Glu-Lys) is a synthetic skin-active peptide derived from the KEK motif found in the natural antimicrobial polypeptide cathelicidin. This multifunctional tetrapeptide is designed to reduce hyperpigmentation, boost skin firmness, and promote cell renewal — making it an ideal ingredient for both anti-aging and skin-brightening formulations.

Key Benefits of Tetrapeptide-30

Hyperpigmentation Control

Unlike standard tyrosinase inhibitors, Tetrapeptide-30 targets the upstream triggers of melanogenesis, specifically inflammatory cytokines (IL-6 and IL-8) and α-MSH production. This helps fade UV- or inflammation-induced dark spots, melasma, and post-inflammatory hyperpigmentation (PIH).

Tetrapeptide-30 Skin Cell Renewal

By soothing inflammation and supporting a healthy epidermal environment, Tetrapeptide-30 promotes skin cell turnover, improving tone, texture, and clarity over time.

Skin Brightening Without Irritation

Reduces hyperchromatic age spots and evens out skin tone without triggering sensitivity. Excellent for all skin types, including sensitive, Asian, and melanated skin tones.

Tetrapeptide-30 for Skin Firmness

While reducing pigmentation, Tetrapeptide-30 also improves skin firmness and elasticity, making it a multifunctional option for anti-aging skincare.

Tetrapeptide-30 Anti-Aging Peptide

Combines brightening and anti-inflammatory properties to reduce both visible signs of aging (like fine lines and dullness) and underlying skin stress that contributes to aging.

Applications

Tetrapeptide-30 is ideal for inclusion in:

• Brightening serums and creams
• Post-acne or post-laser PIH treatments
• Melasma and discoloration control formulas
• Anti-aging creams for dull, uneven skin
• Barrier-repair products for sensitive skin

Technical & Raw Material Info

• Synonyms: TEGO® Pep 4-Even, PKEK peptide
• Peptide Sequence: Pro-Lys-Glu-Lys
• Functionality: Skin brightening, anti-inflammatory, skin renewal
• FDA UNII: H9G9QJT7E2
• Solubility: Water-soluble
• Usage Rate: 1%–5% in emulsions, gels, or serums

Where to Buy Tetrapeptide-30 or Raw Material?

Looking for where to buy Tetrapeptide-30 or source Tetrapeptide-30 raw material for formulation? We offer high-purity, cosmetic-grade Tetrapeptide-30 perfect for R&D, private label manufacturing, or DIY skincare.

Why Choose Tetrapeptide-30?

Tetrapeptide-30 is more than just a skin-brightening agent. Its smart anti-inflammatory mechanism, combined with firming and anti-aging benefits, makes it an exceptional choice for advanced multifunctional skincare. Whether you’re addressing dark spots, aging, or skin sensitivity, this peptide delivers real results without irritation.