Cyanocobalamin/Yeast Polypeptide

Cyanocobalamin/Yeast Polypeptide is a hybrid ingredient combining cyanocobalamin (vitamin B12) with polypeptides derived from yeast. Yeast polypeptides are short-chain amino acid sequences that mimic some of the conditioning properties of larger proteins, whilst cyanocobalamin contributes B vitamin activity known to support skin health.This combination is primarily used as a skin conditioning agent, working to improve the appearance and feel of the skin surface.

Yeast polypeptides work primarily as humectants and film-formers—they absorb water and create a light protective layer on the skin surface, which helps lock in moisture and improve tactile smoothness. Cyanocobalamin adds antioxidant support and may help support skin's natural metabolic processes.Together, these components work to condition the skin rather than actively transform it, making this a supportive rather than active treatment ingredient.

This ingredient is typically incorporated into serums, moisturisers and treatments where it can remain in contact with the skin. Use as directed by the product formulation. It pairs well with other conditioning and hydrating ingredients. No specific application technique is required beyond standard product use.

Generally well-tolerated across skin types. Allergic reactions are rare but possible, particularly in those with yeast sensitivities. Patch test if you have a known sensitivity to yeast-derived ingredients.