
Same purpose
Dr. Althea
Dr.Althea Vitamin C Boosting Serum 30ml
6 of 7 ingredients shared
6 shared · 1 differ, 0 key actives
$54.05
vs $25.00 original
Main difference · Adds Vitamin B3
A formula alternative, not an identical product.

COSRX Hyaluronic Acid Hydra Power Essence 100ml
your reference
$25.00
Only serum 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.
Nothing cross-brand shares enough of COSRX Hyaluronic Acid Hydra Power Essence 100ml’s label to call it a dupe. We would rather show you nothing than a weak match. The closest formulas are below, labeled as what they are.
These share part of the formula or one hero active — shown so you can judge for yourself.

Same purpose
Dr. Althea
6 of 7 ingredients shared
6 shared · 1 differ, 0 key actives
$54.05
vs $25.00 original
Main difference · Adds Vitamin B3

Same purpose
medicube
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$33.25
vs $25.00 original
Main difference · Adds Vitamin B3

Same purpose
D'alba
sharedHyaluronic Acid (salt form),Pro-vitamin B5
adds Vitamin B3,Cica,Ceramide Np,Vitamin C,adds fragrance
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$33.00
vs $25.00 original
Main difference · Adds Vitamin B3

Same purpose
Missha
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$18.60
vs $25.00 original
Save $6.40 (26%)
Main difference · Adds Vitamin C

Same purpose
Mediheal
sharedPro-vitamin B5
missing Hyaluronic Acid (salt form)adds Vitamin B3,Vitamin C,Arbutin,Tranexamic Acid
5 of 7 ingredients shared
5 shared · 2 differ, 1 key active
$41.00
vs $25.00 original
Main difference · Adds Vitamin B3

Same purpose
Curesys
sharedPro-vitamin B5
missing Hyaluronic Acid (salt form)adds Cica,Squalane,Vitamin B3,Tranexamic Acid,
5 of 7 ingredients shared
5 shared · 2 differ, 1 key active
$37.00
vs $25.00 original
Main difference · Adds Cica

Same purpose
Round Lab
sharedPro-vitamin B5
missing Hyaluronic Acid (salt form)adds Vitamin B3,Tranexamic Acid,Cica,Ceramide Np
5 of 7 ingredients shared
5 shared · 2 differ, 1 key active
$37.00
vs $25.00 original
Main difference · Adds Vitamin B3
Same purpose
Jumiso
sharedHyaluronic Acid (salt form),Pro-vitamin B5
adds Snail mucin,Allantoin
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
Price unavailable
Main difference · Adds Snail mucin

Same purpose
K-secret
sharedHyaluronic Acid (salt form),Pro-vitamin B5
adds Snail mucin,Allantoin
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$9.98
vs $25.00 original
Save $15.02 (60%)
Main difference · Adds Snail mucin

Same purpose
K-secret
sharedHyaluronic Acid (salt form),Pro-vitamin B5
adds Snail mucin,Allantoin
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$26.00
vs $25.00 original
Main difference · Adds Snail mucin

Same purpose
Isntree
sharedHyaluronic Acid (salt form),Pro-vitamin B5
adds Vitamin B3,Allantoin
5 of 7 ingredients shared
5 shared · 2 differ, 0 key actives
$14.82
vs $25.00 original
Save $10.18 (41%)
Main difference · Adds Vitamin B3

Same purpose
Dr.Ceuracle
sharedHyaluronic Acid (salt form)
missing Pro-vitamin B5adds Vitamin B3,Cica,Ceramide Np,Vitamin C
5 of 7 ingredients shared
5 shared · 2 differ, 1 key active
$48.45
vs $25.00 original
Main difference · No Pro-vitamin B5
Candidates share at least three label ingredients with COSRX Hyaluronic Acid Hydra Power Essence 100ml. 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 COSRX Hyaluronic Acid Hydra Power Essence 100ml — related formulas, not dupes.