Can I use BHT with Tris(Tetramethylhydroxypiperidinol) Citrate?
Works well together
BHT and Tris(Tetramethylhydroxypiperidinol) Citrate are generally compatible and can be layered in the same routine. As always, introduce one new active at a time and watch how your skin responds.
BHTAntioxidant
- ✓Prevents oxidative rancidity in oils and fats
- ✓Extends formula shelf life
- ⚠Possible sensitization at high concentrations
- ⚠Moderate EWG hazard score; ongoing discussion around potential endocrine activity based primarily on high-dose oral data
- ⚠Used at very low concentrations in cosmetics (0.0002–0.5%); CIR and SCCS consider safe at permitted levels
- ✓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
