ISDIN vs MartiDerm — side by side, no bias.
Our pick
Eryfotona Actinica SPF 50+
9.2/10 · ISDIN
| Eryfotona Actinica SPF 50+ | Epigence Optima SPF50+ | |
|---|---|---|
| Brand | ISDIN | MartiDerm |
| Category | sunscreen | sunscreen |
| Editor Rating | 9.2/10 ★ | 8.2/10 |
| Category | sunscreen | sunscreen |
| Texture | Lightweight emulsion | Lightweight anti-aging fluid |
| Finish | Smooth, semi-matte, no white cast | Protected, brightened, smooth |
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| Verdict | ISDIN's photolyase-DNA-repair sunscreen — the most clinically considered photoprotection in the Spanish dermocosmetic lineup, and one of the rare commercial sunscreens with a mechanism beyond UV-filter blocking. The formula stacks broad-spectrum mineral and chemical filters with patented DNA Repairsomes — photolyase enzymes derived from blue-green algae plankton that actively reverse UV-induced thymine dimer DNA damage already in the skin. The plankton extract is the differentiator: most sunscreens prevent damage, Eryfotona prevents AND repairs. Spanish dermatologists prescribe it for actinic keratosis patients, post-procedure photoprotection, and high-sun-exposure prophylaxis. At $55 for 100ml, mid-tier pricing — but the photolyase technology makes it functionally unique. | MartiDerm's premium sunscreen — an SPF50+ fluid that doubles as an anti-aging treatment. The formulation layers modern UV filters with the brand's signature ingredient: proteoglycans (large glycoprotein molecules that bind water in the extracellular matrix, providing structural hydration and anti-aging support). Ascorbyl glucoside (stabilized vitamin C), niacinamide, and vitamin E provide antioxidant defense against the UV damage that slips past the filters. MartiDerm was the first Spanish brand to use proteoglycans in skincare (the Proteos ampoule line launched their global reputation), and this sunscreen extends that expertise into daily sun protection. At ~$42 for 50ml, mid-tier pricing that's competitive with La Roche-Posay and Vichy anti-aging sunscreens. |
