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

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 concerned with early signs of aging and fine lines
  • Users interested in peptide-based anti-aging without retinoids
  • Sensitive skin types seeking a fragrance-free anti-aging serum
  • People looking for NAD+ based skincare for cellular renewal
  • Those who want barrier support alongside anti-aging actives

Key Ingredients

COSRX

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

EQQUALBERRY

NAD+ (Nicotinamide Adenine Dinucleotide), NMN (Nicotinamide Mononucleotide), 14 Peptide Complex, 5 Ceramides, Vegan Collagen

Product Composition

22% similarity (10 ingredients in common)

Shared Ingredients
waterniacinamidebutylene glycolacetyl glucosamine12-hexanediolxanthan gumallantoinethylhexylglycerinsodium phytate
Only in COSRX (6)
pentylene glycolzinc pcatrehalosepullulancitric acidtocopherol
Only in EQQUALBERRY (30)
hydrogenated lecithinpentaerythrityl tetrabehenatebetainediethoxyethyl succinateceramide nphydroxyethyl ureapanthenolcetearyl alcoholsqualanecarbomerbutyrospermum parkii (shea) buttertromethaminenicotinamide adenine dinucleotideadenosinenicotinamide mononucleotidecyanocobalamin3-butanedioldipropylene glycolcaprylyl glycolrubus fruticosus (blackberry) fruit extractvaccinium macrocarpon (cranberry) fruit extractvaccinium angustifolium (blueberry) fruit extractrubus idaeus (raspberry) fruit extractsambucus nigra fruit extractpunica granatum fruit extractoctyldodecanolpolyglyceryl-4 caprateglyceryl stearatemethylpropanediolpalmitoyl 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
Very lightweight, almost watery texture

Multiple reviewers note the serum feels very thin and watery. Some appreciate the lightness for layering; others feel it lacks substance on its own.

Gradual results over weeks

Users who report positive outcomes typically note improvements in skin hydration and firmness after 1 to 4 weeks of consistent use.

Small dropper dispenses little product

Several users complain that the dropper releases very small amounts, making application tedious for face and neck coverage.

Mixed efficacy opinions

Positive reviews praise hydration and glow. Negative reviews report feeling no difference, questioning whether the NAD+ and peptides deliver visible results at the concentrations used.

View Full Product Details

Related Comparisons