I am 22 and have dry, dehydrated and flakey skin. I’ve used this for a month and if you’re looking for a niacinamide serum or essence this is it. Minimal ingredients are used and it definitely improves your skin flakeyness. The only issue is that the texture feels a bit tackey and is not pleasant for myself. But it’s also quite affordable compared to other serums which have niacinamide, so it depends on your budget and the feel.