COSRX Niacinamide 15% Serum & Peptide Booster Toner Set - Amazon Exclusive, Pore Control & Firming Duo

COSRX Niacinamide 15% Peptide Booster Set pairs a high-concentration niacinamide serum with a peptide-rich booster toner to refine skin texture, control excess oil, and support elasticity.

This Amazon Exclusive duo combines COSRX's Niacinamide 15% Serum with a Skin Booster Peptide Toner to deliver complementary actives in a simple two-step routine. The formulas are designed to target visible pore size, uneven texture, and loss of firmness by layering a oil-regulating, radiance-enhancing niacinamide serum with a lightweight toner that contains six peptides. The set is compact and ideal for anyone wanting a targeted boosting routine without adding many extra steps.

How does this set improve skin texture and pore appearance?

The niacinamide concentrate helps normalize excess oil production and supports a more even surface, while the peptide toner assists in plumping micro-relief for smoother-looking skin. Together they work to create a visibly refined finish and brighter-looking complexion without heavy hydration.

• Niacinamide 15% formula targets oil balance and surface irregularities.
• Zinc PCA helps reduce shine and supports clearer pores.
• Peptide booster tone visibly supports firmness and fine-line appearance.
• Lightweight textures layer easily under moisturizer or makeup.

Can I use both products in the same routine and how?

Yes — the set is formulated to be used sequentially: apply the peptide booster toner first, then the niacinamide serum. Patting the toner in helps absorption and prepares skin for the concentrated serum that follows.

• Step 1: After cleansing, pump 2–3 pumps of the peptide booster toner and gently pat into skin.
• Step 2: Apply 2–3 drops of the Niacinamide 15% Serum and press in until absorbed.
• Finish: Follow with your regular moisturizer and sunscreen in the morning.
• Perform a patch test before facial use if you have sensitive skin.

Who should choose this Niacinamide + Peptide combo?

This set suits people aiming to reduce visible pores and excess oil, and those wanting to support firmness without heavy creams. It’s a good fit for combination, oily, and early-maturing skin types seeking targeted actives in a simple routine.

• Ideal for oily or combination skin needing pore control.
• Helpful for users wanting to add peptides for elasticity support.
• Great as a focused morning or evening booster beneath moisturizer.
• Convenient gift set for newcomers to actives or K-beauty routines.

What precautions and expectations should I have?

Start slowly with high-concentration actives: perform a 24-hour patch test and introduce the serum a few times weekly before daily use. Avoid mixing with other strong actives at first and always use sunscreen during daytime to protect newly refined skin.

• Patch test on body and wait 24 hours for irritation signs.
• Introduce gradually if you use retinoids or exfoliating acids.
• Use daily sunscreen to protect improved skin texture and tone.
• Discontinue use and consult a professional if persistent irritation occurs.

Who is this for: The COSRX Niacinamide 15% Peptide Booster Set is aimed at anyone looking to reduce oiliness and visible pores while supporting skin elasticity with peptides. It works especially well for those who prefer a short, effective routine made from targeted serums rather than heavy creams. If you want a giftable, travel-ready pairing of two complementary actives from a trusted K-beauty brand, this set offers a compact, stepwise approach to refining skin texture and radiance.

Ingredients

15% Niacinamide with Zinc PCA, 6 Peptides with Hyaluronic Acid And Allantoin