Cyclodextrin Hydroxypropyltrimonium Chloride

AKA “Cyclodextrin quaternium, HPT-cyclodextrin chloride”

Humectant

Ingredient Facts

Cyclodextrin hydroxypropyltrimonium chloride

AKA: Cyclodextrin quaternium, HPT-cyclodextrin chloride

Humectant · Humectant · EWG: 4

Synthetic

Humectant

Occlusive

Skin Conditioner

Not Clean

Cyclodextrin Hydroxypropyltrimonium Chloride is a cosmetic ingredient used as film forming, humectant, skin conditioning. Assessed as safe by the CIR.

CAS #

-

Form

Powder

See origin →

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Humectant

A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Viscosity Controlling

Locks In Moisture

Traditional Use

A modern synthetic derivative of cyclodextrin created in the late 20th century. Designed as a conditioning and film-forming agent for hair and skincare products, combining cyclodextrin's delivery properties with quaternary ammonium chemistry for enhanced conditioning.