Cocodimonium Hydroxypropyl Hydrolyzed Silk

What is Cocodimonium Hydroxypropyl Hydrolyzed Silk?

Cocodimonium Hydroxypropyl Hydrolyzed Silk is a chemically modified protein derived from natural silk produced by silkworms. The process involves breaking down silk fibroin into low-molecular-weight peptides through hydrolysis, followed by attachment of hydroxypropyl chains and a quaternary ammonium group sourced from coconut fatty acids. This creates a water-soluble, positively charged ingredient ideal for rinse-off and leave-on cosmetics. Primarily featured in hair conditioners, shampoos, and styling aids, it also appears in skin creams and lotions. Its cationic nature allows strong adsorption onto negatively charged hair shafts and skin surfaces, forming a thin lubricating layer. This mechanism minimizes friction between strands, neutralizes static buildup, enhances slip for easier combing, and imparts a silky texture without residue buildup.

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:

Antistatic agent

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

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.

Benefits

Improves hair manageability by reducing friction and static electricity.

Enhances softness, shine, and smoothness in hair products.

Supports skin flexibility and hydration through surface conditioning.

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 with dry or frizzy hair seeking better detangling.	People with known allergies to silk proteins.
People looking for lightweight conditioning in styling routines.	Individuals sensitive to quaternary ammonium compounds.
Those desiring smoother, softer skin texture from lotions.	Users preferring fully plant-based or vegan ingredients.

Safety Notes

Regarded as low hazard in cosmetic safety assessments.
Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Cocodimonium Hydroxypropyl Hydrolyzed Silk

What makes this ingredient conditioning?

Its positive charge binds to hair and skin, creating a smooth protective layer.

Is it suitable for daily use?

Yes, its mild profile supports regular inclusion in hair and skin routines.

Does it work on all hair types?

Effective across types, especially for improving manageability in dry or damaged hair.