Tris(Tetramethylhydroxypiperidinol) Citrate
AKA “7NW772I64Y, UNII-7NW772I64Y, 220410-74-2, 4-Piperidinol, 1-hydroxy-2, 2, 6, 6-tetramethyl-, 2-hydroxy-1, 3-propanetricarboxylate (3:1) (salt), DTXSID1074387, EC 429-370-5, 3-propanetricarboxylate (3:1), RefChem:192148, DTXCID6036598
UV Filter
Ingredient Facts
Tris (Tetramethylhydroxypiperidinol) citrate
AKA: 7NW772I64Y, UNII-7NW772I64Y, 220410-74-2, 4-Piperidinol, 1-hydroxy-2, 2, 6, 6-tetramethyl-, 2-hydroxy-1, 3-propanetricarboxylate (3:1) (salt), DTXSID1074387, EC 429-370-5, 3-propanetricarboxylate (3:1), RefChem:192148, DTXCID6036598
UV Filter · Uv Absorber · EWG: 1
Synthetic
Sunscreen Filter
Chemical Exfoliant
Clean
4-Piperidinol, 1-Hydroxy-2,2,6,6-Tetramethyl -, 2-Hydroxy-1,2,3-Propanetricarboxylate (3:1) (salt)
Formula
C33H65N3O13
Mol. Weight
711.90
CAS #
220410-74-2
Form
Liquid
See origin →
Functions
Uv Absorber
Blocks or absorbs UV rays to protect your skin from sun damage, dark spots, and premature aging.
Shields from UV damage
Traditional Use
A modern synthetic UV stabilizer and antioxidant developed for cosmetics and personal care products. Used to protect cosmetics from degradation and improve shelf stability.
Skin Types
all-skin-types
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Safety Assessment of Hydroxy Tetramethylpiperidine Oxide and Tris(Tetramethylhydroxypiperidinol)) Citrate as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Tris(Tetramethylhydroxypiperidinol) Citrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Tris(Tetramethylhydroxypiperidinol) Citrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Safety Assessment of Hydroxy Tetramethylpiperidine Oxide and Tris(Tetramethylhydroxypiperidinol) Citrate as Used in Cosmetics.
Raj PS, Bergfeld WF, Belsito DV, Cohen DE, Klaassen CD et al.
International journal of toxicology, 2025
Safety Assessment of Hydroxy Tetramethylpiperidine Oxide and Tris(Tetramethylhydroxypiperidinol) Citrate as Used in Cosmetics.
Raj PS, Bergfeld WF, Belsito DV, Cohen DE, Klaassen CD et al.
International journal of toxicology, 2025
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR