K-SECRET SEOUL 1988 Glow Serum: Niacinamide 15% + Yuja – 30ml

Product
Overview

K-SECRET SEOUL 1988 Glow Serum: Niacinamide 15% + Yuja (30ml) is a
high-concentration dual brightening serum from K-SECRET SEOUL 1988 — a South
Korean skincare brand inspired by classic Seoul beauty traditions — that
combines 15% niacinamide with Yuja (yuzu citrus) extract for a powerful
multi-pathway brightening serum that targets dark spots, uneven skin tone,
and overall skin dullness through complementary, synergistic mechanisms from
both active ingredients, creating a more comprehensive brightening result
than either ingredient alone could achieve at these
concentrations.

Niacinamide at 15% is a high therapeutic concentration that
delivers significantly intensified brightening results compared to standard
5% or 10% concentrations — providing more aggressive inhibition of melanosome
transfer from melanocytes to keratinocytes, meaning a faster and more
pronounced reduction in dark spots, hyperpigmentation, and uneven tone. Yuja
(Citrus junos), the Korean citrus fruit closely related to yuzu, is
exceptionally rich in vitamin C (ascorbic acid) and other citric acid
derivatives that inhibit tyrosinase — the key enzyme in melanin biosynthesis
— at the melanocyte level, creating a complementary upstream brightening
mechanism to niacinamide’s downstream melanin transfer inhibition. Together,
these two ingredients target both the production of melanin (yuja) and its
delivery to the skin surface (niacinamide), providing a dual-mechanism
brightening approach that addresses discolouration at multiple points in the
melanogenesis and melanin transfer pathway. For those in Bangladesh dealing
with dark spots from sun exposure, post-inflammatory hyperpigmentation from
acne, or generally dull and uneven skin tone, this serum offers a meaningful
high-concentration brightening treatment.

Key Benefits

• Niacinamide 15% provides intensive melanin transfer inhibition
  for fast, aggressive dark spot brightening.
• Yuja extract’s vitamin C inhibits tyrosinase to reduce melanin
  production at the source for complementary brightening.
• Dual-mechanism brightening addresses both melanin production
  (yuja) and transfer (niacinamide) simultaneously.
• Antioxidant protection from yuja’s vitamin C and polyphenols
  defends against UV-triggered pigmentation recurrence.
• Barrier strengthening from niacinamide’s ceramide stimulation
  supports resilient skin alongside the brightening action.

Key Ingredients

Niacinamide at 15% provides intensified melanin transfer
inhibition (melanosome suppression), ceramide synthesis stimulation (barrier
strengthening), sebocyte regulation, and anti-inflammatory activity. Yuja
Extract (Citrus Junos Fruit Extract) provides L-ascorbic acid and ascorbic
acid derivatives (tyrosinase inhibition and free radical neutralisation),
citric acid (gentle exfoliation and pH support), flavonoids (antioxidants),
and hesperidin (anti-inflammatory and circulation-supporting
flavonoid).

Who It’s For

Ideal for those with dark spots, sun damage, post-acne marks, or
persistent uneven skin tone wanting a high-concentration dual-action
brightening serum. Best for normal to oily skin types or those with tolerance
to high-concentration niacinamide. Suitable for twice-daily use but begin
with once daily if you have sensitive skin. Always pair with SPF in the
morning for maximum brightening benefit.

Why Shop at Kioraa

Shop authentic K-SECRET SEOUL 1988 products in Bangladesh at
Kioraa — innovative Seoul-inspired K-beauty actives with genuine sourcing and
fast local delivery.