Some By Mi Yuja Niacin Serum — yuja is a Korean citrus with a high vitamin C content, and pairing it with niacinamide gives this serum two routes to the same result — brighter, more even skin — without the instability of a conventional vitamin C formula.
The anti-blemish angle means it works on the marks left by breakouts as well as general dullness.
Best for
Post-blemish marks, dullness, and blemish-prone skin that finds most brightening serums too harsh.
How to use Some By Mi Yuja Niacin Serum
Apply to clean skin morning and night before moisturiser. Follow with sunscreen every morning.
What is in it
Niacinamide
Niacinamide is a form of vitamin B3, and it is one of the few skincare actives that suits nearly everyone. It supports the skin barrier, moderates oil production, and gradually reduces the look of dark marks by slowing pigment transfer to the surface cells. Because it is not an acid and not a retinoid, it rarely stings, and it can sit alongside almost anything else in a routine. Results on tone are gradual — think eight to twelve weeks, not days. Background reading on niacinamide if you want the chemistry behind it.
Vitamin C
Vitamin C does two useful things at once: it interferes with the enzyme that produces pigment, and it neutralises some of the free radical damage that daylight causes. That makes it a morning ingredient — it works with sunscreen rather than replacing it. Pure L-ascorbic acid is the most studied form and also the most temperamental, oxidising when exposed to light and air. A darkening bottle is a real signal, not a cosmetic one.
What to use it with
Seal this in with a moisturiser and apply it to skin that is still damp from a toner — both steps make a measurable difference to how much of the serum stays where you put it. From the rest of our range, APLB Azelaic Acid Peptide Facial Cream and COSRX AHA BHA Clarifying Treatment Toner are sensible companions, and both are stocked with the same cash-on-delivery terms.
Where it fits in your routine
A serum goes on after cleansing and toning, while skin is still slightly damp, and before anything heavier. That order matters more than people expect — the thinnest, most concentrated layer needs direct contact with skin, not a film of moisturiser in the way. Give it thirty seconds to absorb, then seal it in with a cream. If you are using more than one serum, the lighter one goes first.
Before you start
Keep this away from light and heat, and close it properly. Vitamin C oxidises with exposure — if the liquid turns deep yellow or brown, it has lost most of its potency and is worth replacing.
Common questions
Is Some By Mi Yuja Niacin Serum authentic?
Yes. Euros Belle stocks sealed, unopened units sourced through the brand’s own distribution, and we do not sell testers, decants or refilled packaging. Every order is checked before it leaves us, and you are welcome to inspect the seal at the door before paying.
Can I pay cash on delivery?
Cash on delivery is the only payment method we offer — there is nothing to pay in advance and no card details to enter anywhere. You pay the delivery agent when the parcel reaches you. Inside Dhaka delivery is ৳70 and takes one to two days; outside Dhaka it is ৳130 and takes three to four.
Does the Dhaka climate affect it?
Heat and humidity shorten the working life of most cosmetic formulas, and actives like vitamin C and retinoids are the first to suffer. Keep the product capped, out of direct sun, and away from the hottest corner of a bathroom. A cool cupboard is better than a windowsill, and better than a fridge for most textures.
How should I store it?
Somewhere cool and out of direct sunlight, with the cap closed properly. Bangladesh’s heat and humidity shorten the life of most formulas, and a bathroom shelf directly above a hot shower is the worst place in the house for anything active.
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