Quick Highlights (for eBay bullet points & item specifics):

• ✅ 100% Authentic – Sourced from Korea

• 📦 Size: 30ml / 1.01 fl oz

• 🌿 Key Ingredient: 20% Niacinamide + Zinc PCA

• 💧 Skin Concerns: Dullness, Uneven Skin Tone, Large Pores

• 🧴 Skin Type: All skin types, including oily & acne-prone

• 🆕 Best by: 12/2026

• 🔖 UPC: 8809928132969

Description:

Get your glow on with the TIRTIR Niacinamide 20% Serum, a powerful yet gentle brightening serum that visibly improves skin tone, texture, and clarity. This high-performance Korean skincare formula features 20% pure Niacinamide, expertly balanced with Zinc PCA to refine pores, control excess oil, and fade dark spots.

Lightweight and fast-absorbing, it’s perfect for layering under your moisturizer or sunscreen. Whether you're dealing with acne scars, dull skin, or just want that glass-skin glow, this serum is your go-to solution for brighter, smoother skin.

Why You’ll Love It:

✔️ Contains 20% Niacinamide for powerful brightening
✔️ Helps minimize enlarged pores & improve skin texture
✔️ Regulates oil production with Zinc PCA
✔️ Reduces the appearance of dark spots & hyperpigmentation
✔️ Lightweight, fast-absorbing, non-greasy formula
✔️ Ideal for oily, combination, and blemish-prone skin types

How to Use:

1. After cleansing and toning, apply 2–3 drops to your face.

2. Gently pat into the skin until fully absorbed.

3. Follow with moisturizer and sunscreen (AM).
   🌙 Use morning and night for best results.

Ingredients:

The TIRTIR Niacinamide 20% Serum is formulated with a potent concentration of skin-brightening and oil-regulating ingredients:

Niacinamide (20%), Zinc PCA, Glycerin, 1,2-Hexanediol, Dipropylene Glycol, Panthenol, Betaine, Allantoin, Sodium Hyaluronate, and more.

Please note: Ingredient lists may change. For the most accurate details, refer to the product packaging.