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

High-strength brightening care for clear, smooth and radiant skin ✨

A concentrated glow serum formulated with 15% niacinamide to visibly improve dark spots, uneven tone, enlarged pores and dull-looking skin. The powerful brightening formula combines yuja oil with tranexamic acid, glutathione, a stable vitamin C derivative and idebenone to support a clearer, more luminous complexion.

Despite its high concentration of active ingredients, the formula also contains squalane, panthenol, beta-glucan and hyaluronic acid to maintain hydration and skin comfort. The serum leaves the complexion looking smoother, more even and beautifully radiant — perfect for anyone seeking intensive pigmentation care with a healthy glow finish.

Benefits

• Helps visibly reduce dark spots and uneven pigmentation
• Brightens dull and tired-looking skin
• Supports a clearer and more even complexion
• Helps minimize the appearance of enlarged pores
• Improves the look of post-acne marks
• Helps balance excess sebum
• Smooths uneven skin texture
• Provides hydration and barrier-supporting care
• Leaves the complexion fresh and luminous

Key ingredients

15% Niacinamide – a high concentration of vitamin B3 that helps improve discoloration, post-acne marks, enlarged pores and uneven tone while supporting the skin barrier.

Yuja Oil – provides antioxidant care and helps restore a fresh, naturally radiant appearance to dull skin.

Tranexamic Acid – targets the appearance of stubborn pigmentation and supports a more even-looking complexion.

Glutathione – a powerful antioxidant that helps improve skin clarity and luminosity.

Sodium Ascorbyl Phosphate – a stable vitamin C derivative that provides antioxidant protection and supports brighter, more even-looking skin.

Idebenone – a potent antioxidant that helps protect against visible signs of environmental stress and premature ageing.

Squalane, Shea Butter & Macadamia Oil – nourish, soften and help prevent moisture loss.

Panthenol, Beta-Glucan & Hyaluronic Acid – provide soothing hydration and help maintain skin comfort.

Adenosine – supports elasticity and helps improve the appearance of fine lines.

How to use

After cleansing and toning, apply a few drops evenly to the face, avoiding the immediate eye area. Gently pat until fully absorbed, then follow with moisturizer.

Use morning or evening. Always apply sunscreen as the final step of your morning routine.

Due to the high 15% niacinamide concentration, sensitive skin and niacinamide beginners should introduce the serum gradually, starting two or three times per week.

Glow tip ✨

Apply a thin layer to the entire face and a small additional amount to areas with visible pigmentation or post-acne marks. Consistent use together with daily sunscreen is essential for maintaining a brighter, more even complexion.

Perfect for

• Dark spots and uneven pigmentation
• Post-acne marks
• Enlarged or visible pores
• Dull and tired-looking skin
• Uneven tone and rough texture
• Combination and oily skin
• Anyone seeking intensive brightening care

Product details

• Skin type: All skin types
• Especially suitable for: Dull, uneven, combination and oily skin
• Skin concerns: Pigmentation, post-acne marks, enlarged pores, excess sebum and dullness
• Texture: Lightweight serum
• Finish: Smooth, clear and radiant
• Niacinamide concentration: 15%
• Size: 30 ml
• Country of origin: South Korea

Please note: A patch test is recommended before first use. High concentrations of niacinamide may cause temporary sensitivity or redness in reactive skin.