Too much niacinamide can irritate the skin. Studies show that up to 5% niacinamide is enough to benefit the face.
For some people, anything higher than 5% can be irritating. If your skin is turning red, check the percentage of niacinamide used in the product.
If your skin is not reacting badly, you have nothing to worry about – in this case, there is no such thing as too much niacinamide.
A couple of scenarios…
You are using a niacinamide product with less than 5% niacinamide. Your skin is irritated.
What could be the problem?
Don’t assume niacinamide is the culprit if your skin is irritated. Maybe it’s something else…
Check the other ingredients in the product and see if it’s one of them that is irritating.
Your skin is irritated, but your niacinamide product uses less than 5% niacinamide, and all other ingredients in the product seem okay.
What could be the problem, then?
Maybe it’s not the other ingredients in the product.
These days, many skin care products—moisturisers, cleansers, and sunscreen—contain niacinamide.
Maybe you are using one of these products with niacinamide and a niacinamide serum?
That’s too much niacinamide. So check if there is niacinamide in other products you are using.