Niacinamide 10% + Zinc 1%

Contains niacinamide but no zinc PCA, and the formula is built around salicylic acid as an acne treatment rather than a plain niacinamide-zinc serum, so the concentration and purpose differ significantly.

Has niacinamide but no zinc PCA, and niacinamide sits low in the ingredient list suggesting a much lower concentration than the source's 10%, with the formula focused on peptides and hydration instead.

Niacinamide is present but no zinc PCA, and niacinamide's position in the ingredient list points to a lower concentration than the source, with the product also adding tint/pigments for a glow effect.

Shares niacinamide but lacks zinc PCA entirely, and this is a luxury anti-aging serum built around grape-derived actives and fragrance, not a targeted niacinamide-zinc treatment.

Contains niacinamide but no zinc PCA, and the formula is heavily fragranced with dyes and additional actives like ascorbyl glucoside and adenosine, making it a different brightening approach rather than a true dupe.