Ingredient glossary

Mexoryl XL

What Mexoryl XL does for your skin, who it suits, and what to watch for.

INCI: Drometrizole Trisiloxane

Sun protection

In short: Mexoryl XL delivers uvb protection and uva protection, suits most skin types, and the evidence behind it is strong.

What it does
Uvb protection, uva protection
Best for
Most skin types
Evidence
Strong
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The molecule

Tap to enlarge
Chemical structure of Mexoryl XL (Drometrizole Trisiloxane)

The Glow take

Only as good as the sunscreen it lives in.

As a single filter, Mexoryl XL only matters as part of a finished sunscreen you actually reapply. The best SPF is the one that feels good enough to wear every morning.

— Maya

What it does

  • uvb protection
  • uva protection

strong evidencePhotostability and efficacy studies show Mexoryl XL enhances SPF and maintains filter stability especially as a partner to Mexoryl SX and Tinosorb filters.

On a label: usually effective at 3-10%.

Who it's for, and who should skip it

Tends to suit

  • all

Approach with care

No specific group flagged to avoid it.

  • Clogs poresLow
  • Irritation riskLow

How it fits each skin type

  • DrySuits
  • CombinationSuits
  • OilySuits
  • SensitiveSuits

Where it fits in your routine

WhenMorning
Where in the orderThe last step, over everything else

Plays well with

  • uv filters
  • antioxidants

Mexoryl XL, answered

Is Mexoryl XL safe during pregnancy?

Yes. Mexoryl XL is considered safe to use during pregnancy and breastfeeding. As with anything, if you are unsure it is worth a quick word with your doctor or midwife.

Who should avoid Mexoryl XL?

No specific group is flagged to avoid Mexoryl XL. It is well tolerated by most skin. Still, introduce anything new one product at a time.

What concentration of Mexoryl XL actually works?

Mexoryl XL tends to do its job in the 3 to 10% range. Much lower and it is likely underdosed.

This, for every label you own

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Sources & how we reviewed this

Last reviewed July 2026. Educational information about a cosmetic ingredient, not medical advice.