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COSRX The Niacinamide 15 Serum vs Medik8 Niacinamide Peptides
Two products from the same category (Serums) side by side: the verdict, eight ingredient-list checks, key ingredients by position, and prices by store. Shared key ingredients: Niacinamide and Zinc.
We don't name a winner. This page puts the lists and prices side by side, and the choice is yours.
Differences at a glance
The lowest price is £10.14 (about €12.04) for The Niacinamide 15 Serum and €65.00 for Niacinamide Peptides.
Silicone-free: yes for The Niacinamide 15 Serum, no for Niacinamide Peptides.
Hyaluronic acid is ingredient no. 23 in Niacinamide Peptides and is not in the list for The Niacinamide 15 Serum.
Peptides is ingredient no. 29 in Niacinamide Peptides and is not in the list for The Niacinamide 15 Serum.
Niacinamide is ingredient no. 2 in The Niacinamide 15 Serum and no. 1 in Niacinamide Peptides.
Zinc is ingredient no. 6 in The Niacinamide 15 Serum and no. 8 in Niacinamide Peptides.
The list for The Niacinamide 15 Serum has 15 ingredients; the list for Niacinamide Peptides has 32 ingredients.
Side by side
COSRX The Niacinamide 15 Serum and Medik8 Niacinamide Peptides side by side
Pairs follow a published formula: same category, both ingredient lists read and at least one price each, one of the two among its category's 50 cheapest or the 50 with prices from the most stores, and neither a set, gift box or mini size. The two share at least two key ingredients, or one and a price per 100 ml in the same range (the dearer at most 2.5 times the other). The most alike pairs come first.
Yes
Silicone-free
Yes
NoIn the list: DIMETHICONE
Sulfate-free
Yes
Yes
No watchlist ingredients
Yes
Yes
Cruelty-free
No information
No information
Vegan
No information
No information
Key ingredients
Niacinamideno. 2, not counting water
Zincno. 6, not counting water
Niacinamideno. 1, not counting water
Zincno. 8, not counting water
Hyaluronic acidno. 23, not counting water
Peptidesno. 29, not counting water
Ingredients in the list
15 ingredients
32 ingredients
Prices by store
YesStyleCheapest£10.14 (about €12.04)€60.20 / 100 mlBuy · YesStyleAffiliate link
Lyko€24.90€124.50 / 100 mlBuy · LykoAffiliate link
Cocopanda€24.90€124.50 / 100 mlBuy · CocopandaAffiliate link
Cocopanda€65.00€216.67 / 100 mlBuy · CocopandaAffiliate link
Cheapest per 100 ml
€60.20 / 100 ml
€216.67 / 100 ml
The lowest price is in bold. Positions do not count water. Prices checked 10/20/2026.
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