Peptide education • formula transparency • product discovery
Ingredient database

Peptide Directory

Explore common topical cosmetic peptides, what they are used for, and the types of products in which they appear.

Copper peptide

GHK-Cu

Copper-binding tripeptide used in formulas focused on visible aging, skin quality and conditioning.

Full guide →
Octapeptide

SNAP-8

Acetyl Octapeptide-3, used in skincare targeting the visible appearance of expression lines.

Full guide →
Peptide complex

Matrixyl 3000

A trademarked peptide complex commonly used in anti-aging cosmetic formulations.

Hexapeptide

Argireline

Acetyl Hexapeptide-8, commonly used in formulas marketed for expression-prone areas.

Signal peptide

Palmitoyl Tripeptide-1

A lipid-linked peptide frequently included in multi-peptide cosmetic formulas.

Signal peptide

Palmitoyl Tetrapeptide-7

Often paired with other peptides in anti-aging cosmetic complexes.

Copper peptide

Copper Tripeptide-1

The INCI name commonly used for GHK-Cu in cosmetic ingredient lists.

Eye-care peptide

Acetyl Tetrapeptide-5

A peptide used in some eye-area formulas and targeted cosmetic products.

Hair / skin peptide

Biotinoyl Tripeptide-1

A biotin-linked peptide found in some scalp, hair and skin formulations.

Pentapeptide

Palmitoyl Pentapeptide-4

A well-known cosmetic peptide used in anti-aging skincare formulas.