SOME BY MI Yuja Niacin: the K-beauty brightening duo for clearer skin

Why yuzu and niacinamide work so well together

Yuzu — a citrus fruit native to East Asia — is rich in vitamin C, citric acid and flavonoids that collectively target melanin production and oxidative stress. Niacinamide (vitamin B3) works through a different mechanism: it inhibits the transfer of melanin from melanocytes to keratinocytes, reducing pigmentation at a cellular level independent of antioxidant activity. Using both in the same routine means two complementary anti-brightening mechanisms are active simultaneously, targeting hyperpigmentation from two angles. SOME BY MI built its Yuja Niacin line on this pairing, delivering both actives across multiple texture formats.

The Yuja Niacin Brightening All in One Cleanser

The SOME BY MI Yuja Niacin Brightening All in One Cleanser delivers its brightening dose during the cleansing step — an often-overlooked opportunity, since the skin surface is maximally exposed during washing. The gel texture lathers gently without stripping, and the yuzu and niacinamide in the formula begin their work even in the two to three minutes the cleanser is on the face. This is particularly useful for dark spots caused by post-inflammatory hyperpigmentation, which benefit from consistent contact with brightening actives at every routine step rather than one concentrated serum. The 100ml size makes it suitable for double-cleansing or as a standalone cleanser.

The Yuja Niacin Anti Blemish Cream as the finishing step

SOME BY MI Yuja Niacin Anti Blemish Cream 60ml takes the same yuzu-and-niacinamide pairing into a moisturizing format, delivering brightening actives as the skin's barrier is sealed for the day or night. The cream base is medium-weight — comfortable on normal to dry skin, slightly richer than what oily skin might prefer in summer. It is called "anti blemish" because niacinamide at meaningful concentrations also regulates sebum production and reduces the appearance of pores, making this a dual-purpose product for skin that is both prone to blemishes and to post-acne marks.

Adding the SOME BY MI Vitamin C Serum for targeted spot correction

SOME BY MI Galactomyces Pure Vitamin C Glow Serum 30ml adds a pure vitamin C dose between the cleanser and cream steps, amplifying the brightening effect with a direct antioxidant hit. Galactomyces ferment in the formula — a yeast-derived filtrate loaded with vitamins and amino acids — provides additional brightening and texture refinement on top of the vitamin C. Applied on clean, toned skin before the cream, it accelerates the rate at which post-acne marks and sun spots fade. The 30ml size is appropriate for a targeted serum used every other morning to avoid sensitivity.

Building a brightening routine that does not cause sensitivity

Brightening routines carry a higher sensitivity risk than hydration routines because multiple actives are competing for skin's tolerance. The Yuja Niacin line mitigates this through low to moderate concentrations used consistently rather than high concentrations used aggressively. Starting with the cleanser and cream alone for two weeks before adding the vitamin C serum allows the skin to acclimate to each active before the next is introduced. SPF is non-negotiable in any brightening routine — UV exposure activates melanin production and directly counteracts the work of niacinamide and vitamin C, so all brightening results depend on daily sun protection.