Official EU label nameGlossary entry 9631
DROMETRIZOLE TRISILOXANE
This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.
Global evidence snapshot
The resolved identity has matching regulatory evidence in 6 of 13 indexed market datasets: 5 country records and 1 EU Annex records. Every result and evidence gap is listed below.
Markets checked
13
Markets with evidence
6
Evidence gaps
7
Resolved identifiers
1
Resolved substance identity
CAS:155633-54-8
Ingredient index records:
DROMETRIZOLE TRISILOXANE
Cosmetic functions: LIGHT STABILIZER, UV ABSORBER, UV FILTER
Phenol,2-(2H-Benzotriazol-2-yl)-4-Methyl-6-(2-Methyl-3-(1,3,3,3-Tetramethyl-1-(Trimethylsilyl)Oxy)-Disiloxanyl)Propyl
Inventory restriction note: VI/16
7 matched or reported names
DROMETRIZOLE TRISILOXANEPhenol, 2-(2H-Benzotriazol-2-yl)-4-Methyl-6-(2-Methyl-3-(1,3,3,3-Tetramethyl-1-(Trimethylsilyl)Oxy)-Disiloxanyl)PropylDrometrizole TrisiloxanePhenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-(2-methyl-3-(1,3,3,3-tetramethyl-1-(trimethylsilyl)oxy)-disiloxanyl)propyl) (drometrizole trisiloxane)Phenol,2-(2H-benzotriazol-2-yl)-4-methyl-6-(2- methyl-3-(1,3,3,3-tetramethyl-1-(trimethylsilyl)oxy)- disiloxanyl)propyl (Drometrizole Trisiloxane) CAS No.155633-54-8Drometrizole trisiloxane드로메트리졸트리실록산
Regulatory evidence in all 13 markets
Open each matched record for its scope, concentration, conditions, warnings and official source version.
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| Market | Result | Records | Dataset | Meaning / next action |
|---|---|---|---|---|
| European Union EU | Conditional positive-list match | 1Open record 1 | Complete annex dataset Regulation (EC) 1223/2009 consolidated to 1 May 2026 | Review every linked record and exact conditions. |
| Great Britain GB | Permitted list with conditions | 1Open record 1 | Complete consolidated annex dataset GB retained Regulation 1223/2009 schedules, effective 15 August 2026 | Review every linked record and exact conditions. |
| Canada CA | No local match | 0 | Complete Hotlist snapshot Health Canada Cosmetic Ingredient Hotlist, 13 August 2025 | The Hotlist is an administrative compliance tool, not an exhaustive safety approval list. |
| New Zealand NZ | Permitted list with conditions | 1Open record 1 | Complete schedules dataset Cosmetic Products Group Standard schedules effective 1 January 2026 | Review every linked record and exact conditions. |
| ASEAN ASEAN | Permitted list with conditions | 1Open record 1 | Complete regional annex dataset ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026 | Review every linked record and exact conditions. |
| China CN | No local match | 0 | Complete prohibited catalogues plus official-source workflow NMPA 2021 banned catalogues plus dynamic IECIC List I/List II system current since 2025 | IECIC listing is not blanket approval; absence may require the new cosmetic ingredient route, and restrictions are checked separately. |
| Japan JP | Restricted | 1Open record 1 | Complete Standards appendices dataset MHLW Standards for Cosmetics official English source and Japanese amendments checked for the imported snapshot | Review every linked record and exact conditions. |
| South Korea KR | Restricted | 1Open record 1 | Complete current appendix dataset MFDS Notice 2026-19, effective 18 March 2026 | Review every linked record and exact conditions. |
| United States US | No local match | 0 | Complete enumerated federal ingredient rules eCFR Title 21 issue date 27 August 2026 | FDA has no general approved-cosmetic-ingredient catalogue; absence from these sections is not approval or proof of safety. |
| Australia AU | No local match | 0 | Complete cosmetic-relevant Poisons Standard subset plus official workflow Therapeutic Goods (Poisons Standard—June 2026) Instrument 2026 | An AICIS Inventory match is not cosmetic approval; no Inventory match can indicate a new, exempted, reported or confidential introduction. |
| Brazil BR | No local match | 0 | Complete prohibited dataset plus current restricted-list workflow ANVISA RDC 1.029/2026 and RDC 1.030/2026, published 15 June 2026 | RDC 1.030/2026 amends rather than replaces the prohibited baseline, and the second restricted-list revision was still under consultation in July 2026. |
| India IN | No local match | 0 | Complete current Part 2 dataset plus official workflow for Parts 1, 3 and 4 Cosmetics Rules 2020 plus current BIS IS 4707 parts (1:2020, 2:2025, 3:2025, 4:2022) | The standards are separate controlled publications; absence from a locally indexed excerpt is not permission. |
| Saudi Arabia SA | No local match | 0 | Complete official list index SFDA live prohibited/restricted lists, snapshot 30 August 2026 | No list match is not permission; Gulf/SFDA product, claim, notification and technical requirements still apply. |
No market rows match this filter.
Matching market records and conditions
Great Britain
GB retained Regulation 1223/2009 schedules, effective 15 August 2026New Zealand
Cosmetic Products Group Standard schedules effective 1 January 2026Japan
MHLW Standards for Cosmetics official English source and Japanese amendments checked for the imported snapshotSouth Korea
MFDS Notice 2026-19, effective 18 March 2026Exact Annex II–VI evidence
Chemical identity and properties
CAS 155633-54-8PubChem CID 9848888
Drometrizole trisiloxane
Drometrizole trisiloxane is a photostable UVA and UVB light filter. The compound is a lipophilic benzotriazole derivative marketed as Meroxyl XL by L'Oreal, although sunscreens with drometrizole trisiloxane are currently only approved for use in the EU, Canada, Australia, and Japan, among other countries. Despite being used elsewhere in the world with relatively few reports of adverse reactions, the FDA continues to cite that the existing scientific record is not sufficient to establish the compound as being generally recognized as safe and effective for over-the-counter sunscreen use. — DrugBank
- IUPAC name
- 2-(benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[methyl-bis(trimethylsilyloxy)silyl]propyl]phenol
- Molecular formula
- C24H39N3O3Si3
- Molecular weight
- 501.8 g/mol
- Exact mass
- 501.22992172 Da
- Topological polar surface area
- 69.4 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 5
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
SilatrizoleMexoryl XLOR 10154OR-101542-(2H-1,2,3-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-(2,2,4,6,6-pentamethyl-3,5-dioxa-2,4,6-trisilaheptan-4-yl)propyl]phenolPhenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-(2-methyl-3-(1,3,3,3-tetramethyl-1-((trimethylsilyl)oxy)-1-disiloxanyl)propyl)-Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-(2-methyl-3-(1,3,3,3-tetramethyl-1-((trimethylsilyl)oxy)disiloxanyl)propyl)-Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propyl]-
16 more reported names
2-(2H-1,2,3-benzotriazol-2-yl)-4-methyl-6-(2-methyl-3-(2,2,4,6,6-pentamethyl-3,5-dioxa-2,4,6-trisilaheptan-4-yl)propyl)phenolRefChem:135828919-634-2Drometrizole trisiloxane [WHO-DD]2-(2H-Benzo[d][1,2,3]triazol-2-yl)-6-(3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)-2-methylpropyl)-4-methylphenolUNII-HC22845I1XDrometrizole trisiloxane [INCI]2-(2H-Benzo[d][1,2,3]triazol-2-yl)-6-[3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)-2-methylpropyl]-4-methylphenolEBC-27246HY-W419643DROMETRIZOLE TRISILOXANE [USP-RS]2-(2h-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]propyl]phenolTS-10004DB-091411CS-0539357Drometrizole trisiloxane, analytical standard
External database identifiers
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Additional authoritative substance research
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Official source and scope
Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.
Open official Decision