Dupes / Sunscreens / K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum
K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum dupes: 10 sunscreens with the closest formula
We compared K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum's full ingredient list with every sunscreen in the DemythSkin database, weighting the ingredients that do the work (Diethylamino Hydroxybenzoyl Hexyl Benzoate, Ethylhexyl Triazone and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine) far above fillers. These are the closest matches, each with its own efficacy and safety score.

MATCH

Shares Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Ethylhexyl Triazone and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine. Ingredient lists don't state amounts, so strengths may differ.
What does the work in each formula
Every ingredient graded on the same S to D scale the scanner uses. Solid chips are in both products; dashed chips are in only one.
FORMULATION BASE (13 · 19)6 shared ⌄
The 10 closest dupes, ranked by formula match
Match is how much of K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum's weighted formula a product shares. Scores are each product's own, so a dupe can match closely and still score differently.










Prices are the lowest retailer price in our records; a dash means we don't have one. We earn a commission if you buy through a "Find on Amazon" link. It never affects scores or matches.
How we find a dupe
Same product type
Sunscreens are compared with sunscreens, from the products we've scored.
Actives count most
S and A-grade actives weigh up to 30 times more than water, glycerin or thickeners. A dupe must share at least one key active.
30% match or more
Below that it isn't a dupe. Same brand and renamed versions of the original are left out.
A label lists ingredients, not amounts. Two products can share every ingredient at different strengths, so a high match means a similar formula, not a guaranteed identical result.
K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum dupes, answered
What is the best dupe for K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum?
On formula, LADOR Tamanu Airy Sunscreen 50 ml: a 46% match, sharing Niacinamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Ethylhexyl Triazone and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine. It scores 4.2 for efficacy and 4.5 for safety on DemythSkin's ingredient analysis. Abib Sedum Hyaluron Sunscreen Protection Tube SPF50+ PA++++ is next at 41%.
Is LADOR Tamanu Airy Sunscreen 50 ml the same as K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum?
Their ingredient lists overlap closely (46% by our weighted match), but labels list ingredients, not amounts. Two products can share ingredients at different strengths, so treat it as a close formula, not a confirmed copy.
What is a cheaper alternative to K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum?
Of the dupes we have a price for, the lowest is Nivea Sun UV Dry Protect SPF 30 at $8.26 (a 40% formula match), against $18 for K-Secret SEOUL 1988 Sun : Collagen Complex 7 + Plum. Prices are the lowest retailer price in our records and change often.
How do you calculate the match percentage?
We compare full ingredient lists of the same product type, giving proven actives up to 30 times more weight than water, glycerin or thickeners. A dupe must share at least one key active and reach a 30% match; products from the same brand are left out.