The Niacinamide 15 Serum

What you need to know

This is a serum from COSRX priced at ₹1250.

Key ingredients

This serum's star ingredient is 15% niacinamide, also known as Vitamin B3. Niacinamide is a multi-tasking active known for its ability to regulate sebum production, minimize the appearance of pores, improve skin barrier function, and reduce inflammation and redness. At lower concentrations, typically 2-5%, it's widely tolerated and offers significant benefits.

Who should use this

This serum is best suited for individuals with oily or combination skin, particularly those struggling with enlarged pores, excessive shine, and acne. If you have previously used niacinamide at lower concentrations without issue and are looking for a stronger solution for oil control and pore refinement, this could be a good fit. Individuals with resilient skin who know they tolerate high concentrations of actives may also find this beneficial.

Who should skip this

Those with sensitive skin, reactive skin, or a history of irritation from niacinamide should approach this serum with extreme caution or skip it entirely. A 15% concentration is significantly higher than the widely recommended 2-5% 'sweet spot' and can lead to flushing, tingling, redness, or increased sensitivity. Pregnant women should consult their doctor before using any active ingredients. For pregnant women, we recommend 100% mineral sunscreens only.

How to use

Apply 2-3 drops to clean, dry skin after toning and before moisturizing. Use once daily, either in the morning or evening. Do not layer with other active ingredients like Vitamin C, AHAs, or BHAs in the same routine, as this can increase the risk of irritation. Always follow with a good moisturizer and, if used in the morning, a broad-spectrum sunscreen.

What users say

With 0 reviews currently, there is no user sentiment to summarize. However, the existing review summary indicates that 15% niacinamide is a very high concentration primarily for oil control and pore reduction. It notes that while some may find it effective, it increases irritation risk, and 5% is generally considered the sweet spot for niacinamide.

Price context

At Rs1250, the COSRX Niacinamide 15 Serum is competitively priced for a K-beauty active serum of this quality and concentration, especially considering import costs to India. Alternatives with 5-10% niacinamide exist at similar or slightly lower price points from Indian brands, but COSRX is often preferred for its trusted formulations. While cheaper Indian sunscreens are available, Korean and Japanese sunscreens offer superior texture and finish, justifying their higher price.

Final take

The COSRX Niacinamide 15 Serum is a powerful option for those seeking aggressive oil control and pore reduction, but its high concentration demands caution. We recommend it only for individuals with robust skin who have previously tolerated niacinamide well and are looking for a stronger effect. If you experience tingling or redness, it's a clear sign to opt for a lower concentration product instead.

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