PURITO TXA 6% Niacinamide 10 Retinal Facial Serum, for Dark Spots, Post-Acne Marks, Uneven Tone & Hyperpigmentation, 16% Triple Active Formula for Clear Skin, Korean skincare, 30mL 1.01 fl.oz vs 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

Pros

• ✓Three synergistic brightening actives at meaningful concentrations (TXA 6% + Niacinamide 10% + Retinal) targeting melanin at multiple pathways
• ✓Encapsulated retinal delivers retinoid benefits with reduced irritation versus unencapsulated retinol or retinal
• ✓Fragrance-free, vegan, cruelty-free — low sensitisation risk profile
• ✓Lightweight, fast-absorbing bi-phase formula; users consistently praise texture despite visible capsules requiring shaking

Cons

• ✗Dropper applicator on a bi-phase formula is impractical — requires thorough shaking before each use and consistent dosing is harder than a pump
• ✗Retinal, even encapsulated, can cause dryness, tingling, or purging in retinoid-naive users — introduction should be gradual (2–3×/week)
• ✗10% Niacinamide combined with retinal may cause transient flushing in very sensitive skin; rare but reported
• ✗Marketed for AM & PM use, but retinal is photosensitive even when encapsulated — daily SPF is essential for daytime use

Best For

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