Terephthalylidene Dicamphor Sulfonic Acid
3,3'-(1,4-phenylenedimethylidene)bis[7,7-dimethyl-2-oxobicyclo[2.2.1]heptane-1-methanesulfonic acid]
L'Oreal-patented UVA filter (Mexoryl SX); water-soluble camphor derivative with excellent UVA I-II coverage; photostable; not in FDA monograph though L'Oreal filed NDA for specific products. Also known as Ecamsule.
Function & Common Use
UV Filter; Sunscreen
UV Filters
L'Oreal/La Roche-Posay sunscreens, SPF moisturizers, Anthelios products
Synthetic
Concentration Limits
10%
10% (as acid)
N/A
10%
Format restriction: Water-soluble; used in aqueous systems
Baby restriction: No
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is Terephthalylidene Dicamphor Sulfonic Acid safe to use in skincare?
Terephthalylidene Dicamphor Sulfonic Acid has a Low concern rating from The Clean Sheet. L'Oreal-patented UVA filter (Mexoryl SX); water-soluble camphor derivative with excellent UVA I-II coverage; photostable; not in FDA monograph though L'Oreal filed NDA for specific products. Also known as Ecamsule.
Is Terephthalylidene Dicamphor Sulfonic Acid allowed in India?
Terephthalylidene Dicamphor Sulfonic Acid is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is 10%.
What is Terephthalylidene Dicamphor Sulfonic Acid used for in cosmetics?
Terephthalylidene Dicamphor Sulfonic Acid functions as: UV Filter; Sunscreen. It is commonly found in: L'Oreal/La Roche-Posay sunscreens, SPF moisturizers, Anthelios products.
Can Terephthalylidene Dicamphor Sulfonic Acid cause an allergic reaction?
Yes. Terephthalylidene Dicamphor Sulfonic Acid has an allergen flag (No). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Terephthalylidene Dicamphor Sulfonic Acid safe for babies?
Terephthalylidene Dicamphor Sulfonic Acid has baby/child restrictions: No. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex VI (UV filter)
Identifiers
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