Potassium Cocoyl Hydrolyzed Soy Protein

What is Potassium Cocoyl Hydrolyzed Soy Protein?

Potassium Cocoyl Hydrolyzed Soy Protein is a cosmetic ingredient obtained by hydrolyzing soy proteins into smaller peptides and amino acids, then reacting them with fatty acids from coconut oil to form a potassium salt. This process creates an amphiphilic molecule suitable for personal care formulations. Primarily featured in shampoos, conditioners, body washes, and facial cleansers, it acts as a mild anionic surfactant. By lowering surface tension, it enables effective removal of dirt and oils while forming stable foams. The protein component deposits on hair and skin surfaces, enhancing moisture retention and reducing friction for smoother texture. Its biodegradable, vegetable origin makes it popular in natural and gentle product lines, providing a balance of cleansing power and conditioning benefits without harshness typical of stronger detergents.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Hair conditioning

Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.

Skin conditioning agent

Maintains skin softness, smoothness, and flexibility.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Cleansing agent

Removes dirt, oil, and impurities by lowering surface tension and forming micelles, enabling soils to be lifted and rinsed away from skin, hair, or teeth.

Benefits

Supports gentle cleansing by forming micelles to lift away impurities.

Enhances hair softness and manageability by reducing static and friction.

Promotes skin smoothness through light conditioning effects.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit	Who Should Avoid
Individuals seeking mild, plant-based cleansers for daily routines.	Those with known soy allergies, as it derives from soy proteins.
People with normal to dry hair wanting added conditioning.	Individuals sensitive to coconut-derived ingredients.
Users preferring sulfate-free formulations for sensitive scalps.	People with hydrolyzed protein sensitivities in cosmetics.

Safety Notes

Rated low hazard by EWG, indicating minimal health concerns.
Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Potassium Cocoyl Hydrolyzed Soy Protein

What is Potassium Cocoyl Hydrolyzed Soy Protein?

A mild surfactant made from hydrolyzed soy proteins acylated with coconut fatty acids, used for gentle cleansing and conditioning in hair and skin products.

Is it safe for sensitive skin?

It has a low EWG rating and is generally mild, suitable for many with sensitive skin, though patch testing is advised.

Does it help with hair conditioning?

Yes, it improves hair softness and manageability by depositing proteins that reduce friction.