We recently had a lot of discussion about an ingredient called niacinamide, and you asked us to go into more detail about its concentrations.
If you’ve got at least one serum on your bathroom shelf, chances are it contains niacinamide. This ingredient is the backbone of countless skincare formulas — from hydrating basics to serious anti-aging and brightening products. Time to break it down and understand why it’s earned such a loyal fanbase.
What is Niacinamide?
Niacinamide (also known as vitamin B3) is a water-soluble derivative of nicotinic acid. In skincare, it’s the most common and most researched form of vitamin B3 — and for good reason: it’s stable, effective, and well-tolerated by most skin types.
What does it actually do?
A lot — and all of it matters:
• Strengthens the skin barrier and reduces transepidermal water loss
• Boosts the synthesis of fatty acids and ceramides for more resilient skin
• Has anti-inflammatory properties
• Regulates sebum production
• Helps fade pigmentation by inhibiting melanin transfer
• Stimulates collagen and keratin production
Translation: niacinamide is great for oily, acne-prone skin, but also for sensitive, dry, or aging skin. A real multitasker.
What concentrations are effective?
The sweet spot is usually 2–5%. That’s enough to deliver all the benefits without overloading your skin. Sure, there are products with 10–20% (like The Ordinary or Paula’s Choice), but studies suggest higher concentrations don’t always bring better results — and can increase the risk of irritation. If your skin is sensitive, start low and build slowly.
What can you combine it with?
Niacinamide is one of the most flexible ingredients in skincare. It plays well with:
• Hyaluronic acid
• Peptides
• AHA/BHA/PHA acids
• Retinol
And vitamin C? Despite old myths, there’s no real evidence that they cancel each other out. However, if you’ve got sensitive skin, combining the two (especially at higher concentrations) may cause redness. In that case, apply them at different times of day — for example, C in the morning, niacinamide in the evening.
How to spot it in your skincare?
Look for Niacinamide in the ingredient list (INCI). You’ll find it in serums, moisturizers, masks, and even toners. Bestsellers include The Ordinary Niacinamide 10% + Zinc 1%, Paula’s Choice 20% Niacinamide Treatment, and CeraVe PM Facial Moisturizing Lotion.
Bottom line
Niacinamide is the skincare world’s version of a perfect white shirt — versatile, effective, and fits almost everyone. Just don’t overdo it, and remember: consistency beats intensity every time.
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