SOME BY MI Yuja Niacin Blemish Care Serum Mask: Brightening Sheet Masks With Korean Citrus

Yuja is a Korean citrus fruit (similar to yuzu) rich in vitamin C and antioxidants. SOME BY MI's Yuja Niacin line uses yuja extract as a brightening hero, paired with niacinamide for tone correction. The Blemish Care Serum Mask is the sheet mask format of this line: 10 sheets at 25g each, priced at $34.32. Designed for users whose primary concern is post-acne marks, uneven tone, or dullness, used as a weekly or bi-weekly intensive treatment.

The "Serum Mask" designation refers to a higher essence saturation (25g) compared to standard hydration sheet masks (20g). More essence means more active delivery per session. The combination of yuja's natural vitamin C and formulated niacinamide hits pigmentation from two mechanisms: vitamin C inhibits melanin production, niacinamide blocks melanin transfer to surface cells. Together over a 10-mask course (with 1 to 2 masks per week), users see visible brightening and tone evenness.

What It Does

Yuja fruit extract delivers natural vitamin C and flavonoid antioxidants. Niacinamide interrupts melanin transfer and refines pores. Panthenol supports barrier. The sheet mask format creates occlusive delivery, driving actives deeper than surface application. Over 6 to 8 weeks of 1 to 2 masks per week, expect visibly brighter tone, reduced post-acne marks, and a more even complexion.

Who It's For

• Post-acne marks (PIH): Primary target.
• Dull and uneven skin tone: Daily-effective multi-mechanism brightening.
• Sensitive to strong vitamin C: Yuja's natural C is gentler than pure L-ascorbic.
• Brightening routine supplement: Weekly intensive alongside daily brightening products.
• Korean citrus skincare curious: Unique ingredient vs standard vitamin C.

Key Specs

• Quantity: 10 sheet masks, 25g each
• Price: $34.32
• Hero actives: yuja fruit extract, niacinamide, panthenol
• Sheet material: tencel
• Fragrance: light citrus note from yuja

How to Use

After cleansing and toning, apply the sheet to clean skin. Smooth out air pockets. Leave on 15 to 20 minutes (don't exceed 25). Remove and pat remaining essence into skin. Follow with cream. Use 1 to 2 times per week for maintenance. For intensive 10-day brightening cycle: daily use for 10 days, then reduce to weekly maintenance.

FAQ

How does yuja compare to regular vitamin C?

Yuja contains natural vitamin C (ascorbic acid) at lower concentration than formulated serums. The advantage: more stable, gentler, and supplies additional plant antioxidants. The trade-off: lower total vitamin C dose per application. For complementary brightening: yuja masks plus a dedicated vitamin C serum for daily use.

Can sensitive skin use these?

Most sensitive skin tolerates well. Yuja is gentler than aggressive vitamin C serums. Patch test if you have citrus sensitivity (rare but possible).

How does this compare to Mediheal Vita Masks or Banila Co Dear Hydration?

Mediheal Vita is similar brightening positioning, often with simpler vitamin C. Banila Co Dear Hydration is pure hydration focus. For brightening specifically: SOME BY MI or Mediheal. For hydration: Banila Co.

How long will 10 masks last?

At 2 per week: 5 weeks. At 1 per week: 10 weeks. For 10-day intensive cycle: 10 days.

Should I use with my regular vitamin C serum?

Yes, they're complementary. Use serum daily for baseline brightening; use mask weekly for intensive boost. On mask nights, apply the serum first, let absorb, then the mask.

Related Products

Part of the SOME BY MI Yuja Niacin line. Pair with their serum from the SOME BY MI collection. Browse more in Korean sheet masks or brightening skincare.