Sodium Soy Hydrolyzed Collagen

Sodium soy hydrolyzed collagen is a plant-derived protein obtained from soya beans that has been broken down (hydrolysed) into smaller molecular fragments. This process makes the protein easier for formulations to incorporate and potentially easier for the skin to interact with. The sodium component is added during the hydrolysis process to stabilise the ingredient.In skincare and haircare products, this ingredient functions primarily as a humectant and conditioning agent — it helps attract and retain moisture, and can form a light protective layer on the skin or hair surface.

Helps with Anti-Ageing

Hydrolysed collagen peptides are small enough to remain on or near the skin surface, where they act as humectants — drawing water from the dermis into the stratum corneum and helping to bind moisture within the outer layers. This hydrating effect can make skin feel plumper and look smoother temporarily.The protein also forms a thin conditioning film that can reduce transepidermal water loss and create a smoother skin feel. Whether these peptides can penetrate significantly into living skin cells remains unclear; most evidence suggests they work primarily at the surface.

This ingredient works best in formulations where it can remain in contact with skin for sufficient time — serums, masks, and leave-on moisturisers are typical vehicles. Results tend to be incremental; consistent use over several weeks is more likely to show noticeable hydration benefits than occasional application. It pairs well with other humectants such as glycerin or hyaluronic acid, which can amplify hydration effects.

Generally well-tolerated by most skin types. Those with soya allergies should avoid products containing this ingredient, as cross-reactivity is possible, though topical application carries lower risk than ingestion.