Compare Products: The Niacinamide 15 Serum vs NAD+ Peptide Boosting Cream

COSRX

The Niacinamide 15 Serum

Mid-range15%
$25 / 20ml — $1.25/ml
EQQUALBERRY

NAD+ Peptide Boosting Cream

Mid-range
$25.99 / 50ml — $0.52/ml

Who It's Designed For

COSRX
  • Oily and acne-prone skin seeking serious oil control
  • Post-acne marks and hyperpigmentation
  • Enlarged pores and textured skin
  • Users ready to step up from 10% to higher-strength niacinamide
  • Those who prefer minimal-ingredient formulas
EQQUALBERRY
  • Those seeking a cream-format anti-aging moisturizer with peptides
  • Users who want to pair with the NAD+ serum for a complete routine
  • Sensitive skin types looking for fragrance-free firming cream
  • People interested in NAD+ based skincare
  • Those who prefer a richer texture than the serum version

Key Ingredients

COSRX

Niacinamide (15%), Acetyl Glucosamine (2%), Zinc PCA (1%), Allantoin (0.1%)

EQQUALBERRY

5% NAD+, 13 Peptide Complex, Phyto-Mucin, Ceramides, Pomegranate Fruit Juice

Product Composition

24% similarity (10 ingredients in common)

Shared Ingredients
waterniacinamidebutylene glycolacetyl glucosamine12-hexanediolxanthan gumallantoinethylhexylglycerinsodium phytate
Only in COSRX (6)
pentylene glycolzinc pcatrehalosepullulancitric acidtocopherol
Only in EQQUALBERRY (26)
hydrogenated lecithinpentaerythrityl tetrabehenatebetainediethoxyethyl succinateceramide nphydroxyethyl ureapanthenolcetearyl alcoholsqualanecarbomerbutyrospermum parkii (shea) buttertromethaminenicotinamide adenine dinucleotideadenosinenicotinamide mononucleotidecyanocobalamin3-butanedioldipropylene glycolcaprylyl glycolpunica granatum fruit extractrubus fruticosus (blackberry) fruit extractvaccinium macrocarpon (cranberry) fruit extractvaccinium angustifolium (blueberry) fruit extractrubus idaeus (raspberry) fruit extractsambucus nigra fruit extractpalmitoyl pentapeptide-4

User Feedback Patterns

COSRX
Oil control standout

Users consistently report significant reduction in daytime oil and shine. Many describe it as the best niacinamide serum they have tried for sebum control.

Lightweight texture praised

Unlike some high-concentration serums, this absorbs quickly without tackiness or residue. Layers well under other products.

Small bottle concern

The 20ml size (vs. 30ml standard) is a common gripe, especially given the price point.

Pore improvement takes time

Users report visible pore improvement around the 3-4 week mark with consistent twice-daily use.

EQQUALBERRY
Good companion to the serum

Users who purchase the NAD+ set report that the cream adds needed richness after the watery serum.

Newer product, limited reviews

Launched more recently than the serum. Review volume is still building across platforms.

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