Pentapeptide-21

Pentapeptide-21 is a synthetic peptide—a short chain of amino acids designed to mimic natural protein structures found in skin. Peptides are created through laboratory synthesis and function as signalling molecules that communicate with skin cells.This ingredient is classified as a skin conditioner, meaning it helps to improve the texture, feel, and appearance of the skin's surface. It works by engaging with skin cells to support the skin's natural maintenance processes.

Pentapeptide-21 functions as a signalling peptide, meaning it communicates with skin cells to influence their behaviour. When applied topically, it interacts with cell receptors, potentially triggering responses that support skin maintenance and conditioning.The mechanism is thought to involve encouraging the skin to maintain its structural proteins and support normal cellular function, though the precise pathways remain an area of ongoing research.

Pentapeptide-21 is typically found in serums, creams, and treatment products at concentrations that allow it to be absorbed and utilised by the skin. It can be incorporated into both morning and evening routines and is generally compatible with other skincare ingredients. Apply to clean skin before moisturiser for optimal delivery.

Peptides are generally well-tolerated by most skin types. No major safety concerns have been documented, though those with known sensitivities to cosmetic peptides should patch-test first.