What Is Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen?
Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen is a quaternary ammonium salt created when cetearamidoethyl diethylamine reacts with succinoyl hydrolyzed collagen, the latter being collagen that has been broken down into smaller peptides for better solubility. The collagen portion is usually sourced from fish or bovine by-products left over from the food industry while the fatty amine part originates from plant-derived cetyl and stearyl alcohols. The ingredient first appeared in specialty hair care formulas in the early 2000s as brands searched for conditioning agents that combine the smoothing power of quats with the repairing feel of collagen peptides. Manufacturing involves hydrolyzing collagen under controlled enzymatic or acid conditions, modifying it with succinic anhydride, then neutralizing the resulting succinoyl hydrolyzed collagen with cetearamidoethyl diethylamine to form the final quaternary compound. Thanks to its dual nature—fatty chains that cling to hair plus peptides that help retain moisture—it is commonly found in rinse-off conditioners, leave-in sprays, deep-treatment masks, color-protecting shampoos and anti-frizz creams.
Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen’s Cosmetic Benefits/Uses
This ingredient is prized in hair care because it acts as a conditioning agent that deposits a lightweight film along the hair shaft. The quaternary ammonium group carries a positive charge that attracts it to negatively charged damaged areas, helping smooth cuticles, reduce static and improve combability while the collagen peptides enhance softness and impart a subtle, healthy shine.
Who Can Use Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen
This conditioning agent is considered gentle enough for all scalp and hair types including oily dry color-treated chemically processed and natural textures. It is not known to clog pores so it should not pose problems for acne-prone skin along the hairline.
The collagen portion comes from animal sources such as fish scales or bovine hides which means products containing this ingredient are not suitable for vegans or vegetarians. Those following a cruelty-free routine should look for plant based alternatives.
No pregnancy or breastfeeding specific warnings are documented for topical use of this ingredient. It does not penetrate deeply or act hormonally however this is not medical advice and anyone who is pregnant or nursing should show the full ingredient list of any product to their healthcare provider before use.
Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen is not known to cause photosensitivity so it will not make hair or scalp more vulnerable to sun damage. People with fish or beef allergies should still proceed with caution since trace proteins could trigger a reaction.
Potential Side Effects/Adverse Reactions
Reactions to topical Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen vary from person to person. The following list covers potential side effects that could occur though most users will not experience them when the ingredient is properly formulated and used as directed.
- Allergic contact dermatitis in individuals sensitive to fish or bovine proteins
- Mild scalp redness or itching if the formula contains a high level of quaternary ammonium salts
- Eye irritation if rinse-off products are not thoroughly washed out
- Product buildup that leaves hair feeling heavy when used in excess
If any irritation or unexpected reaction develops stop using the product and consult a medical professional.
Comedogenic Rating
Rating: 1/5. Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen is highly water dispersible and carries a positive charge that keeps it on the hair surface rather than slipping into facial pores. Its peptide portion is lightweight and its fatty chain is too bulky to lodge inside follicles so it has minimal potential to clog pores. This makes it generally suitable for acne-prone or breakout-prone users. Keep in mind that a finished conditioner or mask may pair this ingredient with heavier oils or silicones that raise the overall comedogenic load so always check the full formula if blemishes are a concern.
Summary
Cetearamidoethyldiethonium Succinoyl Hydrolyzed Collagen serves mainly as a hair-conditioning agent. The quaternary ammonium segment clings to damaged cuticles to smooth frizz reduce static and improve detangling while the collagen peptides sit on the strand surface to boost moisture retention and leave hair feeling softer and glossier. Although not as mainstream as classic conditioners like behentrimonium chloride it has carved out a niche in premium masks and color-care lines that market a collagen boost for hair.
Topically it is considered safe for most people with low irritation and virtually no comedogenic risk. Still every scalp and skin differ so patch testing a new product for a couple of days is a smart habit before fully working it into a routine.