Mexoryl SX
INCI: Ecamsule
Also known as: Ecamsule
SPFspfsyntheticStrong evidencePregnancy safe
88
Skinlumis Rating
Comedogenic
1/5
Irritancy
1/5
Best applied
AM
Effective range
2%–3%
How It Works
L'Oréal's proprietary UVA filter, among the first photostable UVA filters approved in the US.
Absorbs UVA1 + UVA2 (290–400nm) and is photostable; covers the gap left by avobenzone alone.
pH Range
5.0–8.0
Benefits
- UVA protection
- Photostable
Proven For
What the evidence supports.
UV damage prevention
Best For
- All skin types
Avoid If
No notable contraindications reported.
Layering Order
10/10
Final occlusive/SPF layer.
Max Safe Concentration
3%
Concentration range in well-formulated products: 2%–3%
Seasonal Use
Year-round.
For Estheticians & Professionals
Found in L'Oréal/La Roche-Posay/Vichy sunscreens; Anthelios line is canonical.
Pairs Well With
Conflicts With
No flagged conflicts. Still, patch-test new actives.
Your Skin Compatibility
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