What does Tris(tetramethylhydroxypiperidinol) citrate do?

Used in cosmetics as a UV filter.

Is Tris(tetramethylhydroxypiperidinol) citrate safe?

We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

beauty

Tris(tetramethylhydroxypiperidinol) citrate

CAS 220410-74-2

Concern score

Not assessed — no hazard data yet.

Tris(tetramethylhydroxypiperidinol) citrate in plain language

What it is: Also known as 1-Hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium Citrate · Tris(tetramethylhydroxypiperidinol) · Tinoguard q
What it does: Used in cosmetics as a UV filter.
UV absorber
Fragrance
Stabiliser
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Tris(tetramethylhydroxypiperidinol) citrate appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Beauty

USFDAlisted in openFDA substance2 entries
- openFDA substance registry classifies this ingredient as concept.Source →
- openFDA substance registry classifies this ingredient as chemical.Source →
EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 8 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including UV stabilizer, Stabilizing agent, Fragrance.
- EPA CPDat observed this chemical in 8 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including UV stabilizer, Stabilizing agent, Fragrance.Source →

Expert safety opinions

No expert opinion on file for Tris(tetramethylhydroxypiperidinol) citrate. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Tris(tetramethylhydroxypiperidinol) citrate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated September 2013
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Tris(tetramethylhydroxypiperidinol) citrate in a product composition. These are source records, not Greenveil catalog products.

Source records

Named organisations

Personal care

Typical roles

UV absorberFragranceStabiliser

See products using Tris(tetramethylhydroxypiperidinol) citrate →

Catalog

Found in these products

Cosmetic and personal-care products that list Tris(tetramethylhydroxypiperidinol) citrate are shown first. Their ingredient lists include Tris(tetramethylhydroxypiperidinol) citrate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 33 →Find products without it →