Some By Mi Yuja Niacin Anti Blemish Serum

It's a brightening serum that targets dark spots, post-acne marks and uneven tone. Yuja extract delivers natural vitamin C to fade pigmentation and boost radiance, while niacinamide evens skin tone, regulates oil and strengthens the barrier. The lightweight texture absorbs quickly without leaving a greasy finish.

Yuja (Citrus junos) is a Korean citrus fruit rich in vitamin C — the serum's hero ingredient. Vitamin C helps fade dark spots and hyperpigmentation while boosting overall radiance. This serum layers yuja with several vitamin C forms plus arbutin and glutathione, giving a gentler, multi-angle approach to brightening.

Yes. The old idea that they cancel each other out is a myth — they're well formulated together, as in this serum, which pairs niacinamide with yuja-derived vitamin C. Niacinamide regulates oil and strengthens the barrier while vitamin C brightens, so the two complement each other for clearer, more even skin.

It works best on flat, pigmented marks — the brown or red spots left after a breakout — using vitamin C, arbutin and glutathione to fade them over time. It won't fix indented or raised textural scars, which need professional treatment. Consistent daily use over several weeks gives the clearest results.

You can use it either time, after cleansing and toning and before moisturiser. Many prefer mornings, as vitamin C adds antioxidant protection during the day. If you use it in the morning, always follow with sunscreen — vitamin C works best alongside SPF, and sun protection prevents new pigmentation.

Yes, it's a good match. The niacinamide helps regulate sebum and refine the look of pores, and the lightweight, fast-absorbing texture won't feel heavy or greasy. It also targets the post-acne marks that breakouts leave behind, making it useful for blemish-prone skin working on both clarity and tone.

Generally yes. It uses gentler vitamin C forms alongside soothing madecassoside, panthenol and bisabolol, so it's more approachable than a strong pure vitamin C serum. It does contain citrus and mint extracts, though, which can bother very reactive skin — so patch test first if yours is easily irritated.