Hydrolyzed Soy Protein

Hydrolyzed Soy Protein is a gentle, plant-derived ingredient used in skincare and haircare to help hydrate, strengthen and smooth. It is a favourite in UK beauty formulas for its ability to leave skin and hair feeling softer and more conditioned without any heaviness.

How it works in skincare

In cosmetics and skincare, Hydrolyzed Soy Protein is broken down into smaller peptides that can be easily absorbed. It forms a light, breathable film on the surface of skin or hair, helping to lock in moisture while improving elasticity and softness. Commonly found in moisturisers, serums, hair masks and conditioners, it delivers a silky feel and enhances the overall appearance of a healthy, smooth complexion or glossy hair.

Key benefits

Helps improve skin hydration and moisture retention
Enhances skin softness and smoothness
Strengthens hair fibres and reduces breakage
Improves hair shine and manageability
Supports a more supple skin feel
Provides lightweight conditioning without greasiness

Best for

dry skin, mature skin, sensitive skin, dull or tired-looking skin, fine or damaged hair

Where it comes from

Hydrolyzed Soy Protein is derived from soybeans. The proteins are extracted from the seeds of the soya plant (Glycine max) and then enzymatically broken down into smaller, water-soluble peptides.

Products with Hydrolyzed Soy Protein

Not every product on UK Lips lists a full ingredient breakdown — so there may be many more formulas that contain Hydrolyzed Soy Protein than we can show here. These are the comparisons where we’ve confirmed it in the listed ingredients.

All ingredients