Sodium Cocoyl Hydrolyzed Soy Protein

What is Sodium Cocoyl Hydrolyzed Soy Protein?

Sodium Cocoyl Hydrolyzed Soy Protein originates from soy proteins that undergo hydrolysis to yield smaller peptide chains, which are then acylated with fatty acids derived from coconut oil. This process creates an amphiphilic molecule with both hydrophilic protein segments and lipophilic fatty chains, making it effective as a mild anionic surfactant in rinse-off cosmetics such as shampoos, conditioners, body washes, and facial cleansers. It functions by lowering surface tension to facilitate dirt and oil removal through micelle formation and foaming, while the protein moieties adsorb onto hair cuticles and skin surfaces to form protective films. These films reduce friction, control static, and impart smoothness without residue buildup, supporting its role in gentle daily cleansing routines.

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.

Antistatic agent

Reduces static electricity and flyaways by improving surface conductivity, enhancing hair manageability and smoothness in conditioners and styling products.

Benefits

Delivers effective yet non-stripping cleansing action

Improves hair texture, shine, and ease of combing

Supports skin softness and flexibility post-rinse

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-derived cleansers for daily use	Those with known soy protein allergies
People with dry or frizzy hair needing conditioning benefits	People sensitive to coconut-derived fatty acids
Users preferring multifunctional ingredients in shampoos and washes	Individuals prone to protein buildup on fine hair

Safety Notes

Considered low hazard with minimal irritation potential
Non-comedogenic, suitable for blemish-prone skin types

Frequently Asked Questions about Sodium Cocoyl Hydrolyzed Soy Protein

What products commonly contain Sodium Cocoyl Hydrolyzed Soy Protein?

Found in shampoos, conditioners, body washes, and facial cleansers for gentle foaming and conditioning.

Is it suitable for sensitive skin?

Yes, its mild nature makes it appropriate for sensitive scalps and skin, with low irritation reports.

Does it help with static hair?

It acts as an antistatic agent, reducing flyaways and improving manageability.