Review – COSRX The Niacinamide 15 Serum

I love Cosrx brands. I have used quite a couple of them because they work well for my skin. If you notice most of my reviews have been about Cosrx. Anyway, I decided to purchase the CosRx The Niacinamide 15 Serum and it has been a great addition to my skincare routine. My husband loves it so much and now it is finished. The serum comes in a 20ml opaque bottle which not only looks great on my skincare shelf but also protects the formula from light, keeping it effective for longer.

Texture and Application

The serum is a colourless liquid that feels it is lightweight almost like applying water to your skin. This makes the serum easy to apply; all you need is 2 – 3 drops for your face. It absorbs quickly without feeling heavy or leaving behind a sticky residue. I usually apply it in the morning and/or at night and it layers well with other products in my routine.

Results and Experience

I don’t love the serum as much as my husband does. He has oily skin so the serum works well for him. After using it, he noticed an improvement in his skin texture and feel. His skin looks smoother and soft touch. As for me, I love the serum too. It works well for my combination skin type. It controls excess oil around my nose area and keeps the rest of my skin even toned.

It turns out my husband has claimed the product as his now. He typically applies it on his skin at night. Now that he has finished it, we need to get a new one but I can’t seem to find it anywhere in my local beauty store. Also, the product is quite affordable.

How to Use COSRX The Niacinamide 15 Serum

Using COSRX The Niacinamide 15 Serum is pretty straightforward and you can easily fit it into your daily skincare routine. Here’s a step-by-step guide:

Step 1: Cleanse Your Face

Begin with a gentle cleanser suitable for your skin type. Cleansing removes dirt from your skin and prepares your skin to absorb any product you apply.

Step 2: Tone (Optional)

I love toner; I like applying toner to my skin. I am currently using the CosRx AHA/BHA toner. This step is optional. Toner helps balance your skin’s PH and enhance absorption of subsequent products.

Step 3: Apply the Serum

• Dispense the Serum: Using the dropper, dispense a small amount of the niacinamide serum (2-3 drops is usually sufficient).
• Apply to Face: Gently dot the serum onto your forehead, cheeks, nose, and chin.
• Massage It In: Using your fingertips, gently massage the serum into your skin using upward and outward motions. Focus on areas that may need extra attention, like uneven skin tone or texture.

Step 4: Follow with Moisturizer

After the serum has fully absorbed (which usually takes just a few seconds), apply your favourite moisturizer. This helps lock in the serum and keeps your skin hydrated.

Step 5: Use Sunscreen (Morning Routine)

If you’re using the serum in the morning, finish your routine with a broad-spectrum sunscreen. This is essential, as niacinamide can help with skin healing and barrier function, but UV protection is key to preventing further skin issues.

Frequency of Use

You can use COSRX The Niacinamide 15 Serum once or twice a day, depending on your skin’s needs. Many users find great results by incorporating it into their morning and evening routines.

Tips for Best Results

• Patch Test: If you’re using niacinamide for the first time, consider doing a patch test to ensure you don’t have any adverse reactions.
• Layering: This serum pairs well with other ingredients. If you’re using active ingredients like retinol or vitamin C, apply them at different times of the day or with a few hours in between to avoid potential irritation.
• Consistency is Key: For best results, use the serum consistently over time. Many users begin to see improvements in skin texture and tone within a few weeks.

Final Thoughts

I’m planning to purchase another one but I am still yet to find it in my local beauty store. If you’re looking for a lightweight niacinamide serum, particularly for oily or combination skin, I highly recommend giving this one a try.