Quick answer: the ISDIN Eryfotona Actinica SPF 50+ comes closest to the Supergoop! Unseen Sunscreen SPF 40: it has every key treatment active in it (SPF filters). On price, both sit in the Premium tier. It also overlaps with 1 other product below.
Products the Eryfotona Actinica SPF 50+ matches
Supergoop!
1 of 1
hero active matched
Same price tierSPF filters
Why it holds up: Matches every key treatment active in the original: SPF filters.
Full ingredient analysis →See them side by side →Supergoop!
1 of 3
hero actives matched
Same price tierSPF filters
Why it holds up: Shares SPF filters, but not the original's Niacinamide.
Full ingredient analysis →See them side by side →Common questions
Is the ISDIN Eryfotona Actinica SPF 50+ a real dupe?
It shares hero actives with 2 same-category products in our catalogue, most closely the Supergoop! Unseen Sunscreen SPF 40 (matching 1 of 1 of its hero actives). "Dupe" here means shared key ingredients, not an identical formula.
Does matching more hero actives make it better?
No. The match count only shows how many hero actives are shared. The base, supporting ingredients, texture and price still differ, so use the side-by-side comparison for the full picture.
Educational information only — not medical advice. Overlap reflects shared hero actives, not clinical equivalence.