
Closest formulaSimilar formula
Cocokind
biggest bundle ever
15 of 31 ingredients shared
15 shared · 16 differ, 3 key actives
$100.00
vs $41.00 original
Main difference · No Vitamin B3
A formula alternative, not an identical product.

Summer Skin Barrier Duo
your reference
$41.00
Only the same product type matches are shown.
picking by how much of the original's full ingredient list is shared · log in and set a skin profile to use this.
picking by how much of the original's full ingredient list is shared My skin: Log in and set a skin profile to use this.

Closest formulaSimilar formula
Cocokind
15 of 31 ingredients shared
15 shared · 16 differ, 3 key actives
$100.00
vs $41.00 original
Main difference · No Vitamin B3
These share part of the formula or one hero active — shown so you can judge for yourself.

Same purpose
SKIN1004
sharedVitamin B3,Hyaluronic Acid (salt form)
missing Squalane,Urea,AHA exfoliant (gentle),Ceramide Npadds Cica,Titanium Dioxide,Pro-vitamin B5,Hyaluronic Acid,
12 of 31 ingredients shared
12 shared · 19 differ, 4 key actives
$55.80
vs $41.00 original
Main difference · No Squalane

Same purpose
Mary & May
sharedVitamin B3
missing Squalane,Urea,Hyaluronic Acid (salt form),AHA exfoliant (gentle),adds Allantoinadds fragrance
10 of 31 ingredients shared
10 shared · 21 differ, 5 key actives
£9.09 GBP
vs $41.00 original
Main difference · No Squalane

Loosely similar
Graydon Skincare
sharedCeramide Np
missing Vitamin B3,Squalane,Urea,Hyaluronic Acid (salt form),
6 of 31 ingredients shared
6 shared · 25 differ, 5 key actives
$54.00
vs $41.00 original
Main difference · No Vitamin B3

Loosely similar
COSRX
sharedHyaluronic Acid (salt form)
missing Vitamin B3,Squalane,Urea,AHA exfoliant (gentle),adds Pro-vitamin B5,Allantoin,Hyaluronic Acid
6 of 31 ingredients shared
6 shared · 25 differ, 5 key actives
$22.00
vs $41.00 original
Save $19.00 (46%)
Main difference · No Vitamin B3

Loosely similar
Graydon Skincare
missing Vitamin B3,Squalane,Urea,Hyaluronic Acid (salt form),adds Zinc Oxide,Titanium Dioxide
5 of 31 ingredients shared
5 shared · 26 differ, 6 key actives
$54.00
vs $41.00 original
Main difference · No Vitamin B3
Candidates share at least three label ingredients with Summer Skin Barrier Duo. Common bases are down-weighted, meaningful actives count more, and this view is scoped to the same product type. Commissions never affect order.
Hero actives first. We compare the meaningful actives named on the original’s label. Ubiquitous bases — water, glycerin, hyaluronic acid, butylene glycol — are never treated as evidence that two formulas do the same job.
Then the rest of the list. How many of the original’s ingredients also appear on the other label, always shown as a count against the original’s own length — never a headline number on its own. Candidates share at least three label ingredients with the original, common bases are down-weighted, and meaningful actives count more.
Price. Savings compare the best real offer we hold for each product, or its catalog price when there is no offer, and only within one currency. Commissions never affect the order of this list.
Your profile. Signed in, rows also mark ingredients you told us to avoid and the goals you set. That changes what is highlighted and what is ranked first — never which products qualify, and never what anyone else sees.
method v2 · 2026-08-30 — tiers replace the single 50%-share floor; same-brand aliases collapsed; hero actives exclude commodity humectants; sunscreens are never called dupes; labels under 10 ingredients are never called dupe sources.
Other products from the same brand that share decoded ingredients with Summer Skin Barrier Duo — related formulas, not dupes.