What Is Bis-(Decyltetradeceth-150) Hexanedicarbamate?
Bis-(Decyltetradeceth-150) Hexanedicarbamate is a synthetic polymer that forms when 1,6-hexamethylene diisocyanate reacts with the polyethylene glycol ether of decyltetradecanol. The result is a large molecule with about 150 repeating ethoxy units that give it a flexible, water-compatible backbone and two long fatty side chains that improve its affinity for oils. First developed in the 1990s as manufacturers searched for gentle, plant-friendly thickeners to replace heavy petrolatum-based materials, it soon moved from specialty hair care into mainstream skin care thanks to its smooth, non-greasy feel. Commercial production involves controlled addition of the diisocyanate to the fatty alcohol ethoxylate under low moisture conditions, then thorough purification to remove trace isocyanates. Today you will most often spot it in gel creams, sheet mask essences, lightweight moisturizers, after-sun lotions, and leave-in hair serums where a clear finish and a fresh skin feel are important.
Bis-(Decyltetradeceth-150) Hexanedicarbamate’s Cosmetic Benefits/Uses
In formulas this ingredient is prized for a single yet vital role.
Viscosity controlling: It helps chemists fine-tune how thick or runny a product feels. By swelling slightly in water and aligning its long chains, it gives lotions and gels a smooth, cushiony texture that spreads easily and stays stable over time. This means a serum will not drip off your fingers too quickly, a cream will not separate on a hot day, and a mask will cling evenly to the skin or hair, making the overall user experience more pleasant.
Who Can Use Bis-(Decyltetradeceth-150) Hexanedicarbamate
This polymer is lightweight and non occlusive so it tends to work well for dry, normal, combination and oily skin. Its smooth feel and low film-forming nature also make it comfortable for sensitive skin, although anyone with a known allergy to polyethylene glycols should stay cautious.
The raw materials are synthetic or plant derived and no animal by-products are needed during manufacture, making it suitable for vegans and vegetarians.
Because the ingredient is a large molecule that sits on the surface and is not readily absorbed, it is generally considered low risk for women who are pregnant or breastfeeding. That said this is not medical advice and those who are pregnant or nursing should show any new skincare product to their doctor before use just to be safe.
It is not known to cause photosensitivity, so it will not make skin more prone to sunburn.
Potential Side Effects/Adverse Reactions
Responses to topical Bis-(Decyltetradeceth-150) Hexanedicarbamate differ from person to person. The points below show potential side effects but most users will not notice any of them when the ingredient is used correctly in a finished formula.
- Mild skin irritation – temporary redness or itching can occur on very reactive skin
- Contact dermatitis – rare allergic reaction is possible in individuals sensitive to isocyanates or polyethylene glycols
- Eye stinging – may happen if a product containing the polymer gets into the eyes
- Clogged pores in heavy formulas – unlikely but richer products that pair it with comedogenic oils may trigger breakouts in acne-prone skin
If any of these reactions appear stop using the product and consult a healthcare professional.
Comedogenic Rating
Rating: 1/5 – The molecule is very large, sits on the surface, and has a light non-occlusive character so it is unlikely to block pores. The small amount of fatty content comes from branched side chains that do not pack tightly on skin, which further lowers clogging potential. This makes Bis-(Decyltetradeceth-150) Hexanedicarbamate generally suitable for people prone to acne or breakouts. Keep in mind that the overall formula still matters, because pairing the polymer with heavy oils or waxes can raise the final product’s comedogenicity.
Summary
Bis-(Decyltetradeceth-150) Hexanedicarbamate is mainly used to control viscosity, lending lotions and gels a smooth cushiony glide and helping them remain stable across temperature swings. It does this by swelling slightly in water then entangling its long ethoxy chains, which thickens the water phase without adding greasiness.
The ingredient is something of a niche workhorse: common enough that you will notice it in modern lightweight moisturizers and hair serums yet not as widespread as classic thickeners like carbomer or xanthan gum. Formulators value its clear finish and silky feel which explains its steady, if understated, presence in new product launches.
Safety data show low irritation and virtually no toxicity concerns, making it a low-risk choice for most skin types. Still, every person’s skin is unique so it is wise to patch test any new product that contains this polymer before full application.