Other ingredient
Tris(Tetramethylhydroxypiperidinol) Citrate
Tris(Tetramethylhydroxypiperidinol) Citrate is a citrate salt of a hindered amine light stabilizer (HALS) based on the tetramethylhydroxypiperidinol moiety. In retinol-containing cosmetics it functions as a radical chain-breaking stabilizer that protects retinol from photochemical and oxidative degradation, significantly extending product stability and efficacy. This is a formulation stability additive — it does not have direct skin benefit but preserves the activity of retinol.
Also known as: HALS retinol stabilizer, Tinuvin 99
antioxidantstabilizing
Benefits
- ✓A hindered amine light stabilizer (HALS) based on the tetramethylhydroxypiperidinol (TEMPO-related) scaffold — used specifically to protect retinol from UV-induced and oxidative photodegradation in cosmetic formulations
- ✓HALS compounds interrupt radical chain reactions by scavenging peroxy and alkoxy radicals that initiate retinol degradation — without the HALS, retinol products lose potency rapidly under light exposure
- ✓As a citrate salt, it is compatible with aqueous formulation matrices; provides significantly improved retinol shelf-life stability compared to tocopherol-only antioxidant systems
No known watch-fors.
Compatibility
✓ Works well with
+ Retinol+ Retinal+ Tocopherol+ BHT