COSRX Niacinamide 15% Face Serum, Minimizing Pores & Sebums, Blemish Treatments for Discoloration, Dark Spots, Enlarged Pores, Anti-aging, 0.67 fl.oz / 20 ml, Animal Testing-Free vs Cos De BAHA Niacinamide 10% Serum 30ml - Tightens Pores, Reduces Wrinkles, Repairs Skin, Vitamin B3

Pros

• ✓High 15% niacinamide concentration delivers measurable results for pores, sebum control, and hyperpigmentation — consistently reported by reviewers across skin types
• ✓Lightweight, fast-absorbing texture with no sticky residue; universally praised application experience
• ✓Zinc PCA synergises with niacinamide for enhanced oil regulation — a well-documented combination for acne-prone and oily skin
• ✓Clean, minimal formula: fragrance-free, paraben-free, sulfate-free, with soothing panthenol and allantoin to buffer irritation potential

Cons

• ✗20ml bottle is unusually small — with twice-daily use it lasts roughly 6–8 weeks, making cost-per-ml high relative to comparable serums
• ✗Initial stinging or tingling is frequently reported in the first 1–2 weeks; at 15% this is expected but rules out very reactive or compromised skin barriers
• ✗Daily use without moisturiser can cause mild tightness or dryness, particularly in drier climates or for those not layering hydration on top
• ✗A small number of users report itching or irritation that did not resolve — likely due to barrier sensitivity rather than a formulation defect, but indicates the concentration is not universally tolerated

Best For

Pros

• ✓High 10% niacinamide concentration — clinically supported for pore tightening, sebum regulation, and hyperpigmentation
• ✓Complementary actives: zinc (sebum/anti-acne), allantoin (soothing), hyaluronic acid (hydration), aloe
• ✓Lightweight, water-like texture absorbs quickly and layers well under makeup and other serums
• ✓Excellent value — repeatedly highlighted as an affordable alternative to premium serums

Cons

• ✗Can pill when layered over certain serums or heavier textures — application order matters
• ✗One reported allergic rash — patch test recommended, especially for reactive skin
• ✗Packaging complaint: bottle not filled to capacity in some units
• ✗10% niacinamide may cause flushing or transient redness for very sensitive or rosacea-prone skin

Best For