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Ingredient · INCI reference

Drometrizole Trisiloxane

a.k.a. Mexoryl XL

CAS 155633-54-8

Mexoryl XL is a newer photostable organic filter with broad UVA1, UVA2, and UVB absorption. The EU, Korea, and Japan approve it up to 15% (Japan as a quasi-drug); US approval is pending. EWG rates it 1.

Modern organic Next-gen photostable chemical filters. Gen · new organic
01 Spectrum coverage UVA1 · UVA2 · UVB
UVB 290–320nm UVB (290–320nm) — covered UVA-II 320–340nm UVA-II (320–340nm) — covered UVA-I 340–400nm UVA-I (340–400nm) — covered
02 Regional approval · max %
JP ✓ 15% Japan: Approved · max 15% KR ✓ 15% South Korea: Approved · max 15% EU ✓ 15% Europe: Approved · max 15% US · — United States: Pending
03 Safety profile
EWG score
1
Reef-toxic
No
Endocrine disruptor
No
Comedogenicity
0
Reference

Frequently asked questions

What does Mexoryl XL cover?

Mexoryl XL absorbs across UVB, UVA2, and UVA1, providing broad-spectrum protection from a single molecule. It is often paired with other filters to round out a formula.

Is Mexoryl XL approved in the US?

Not yet. Its US sunscreen-active status is listed as pending. It is approved in the EU, Korea, and Japan, each up to 15% (Japan as a quasi-drug).

Is Mexoryl XL photostable?

Yes. It is a newer-generation photostable filter and is often used to help stabilize less stable filters such as avobenzone in combination formulas.

Products in catalogue

Containing Drometrizole Trisiloxane