vitamin c

I have a combination skin close to oily, but my skin is sensitive that is why I prefer a little bit lower percentage of vitamin C. I can advise you Tiam's vitamin C. But the problem is that it is oxidez fast ((

I'm going to buy this serum. I can recomend vitamin c serum from purito too, I liked it

I will go for wishtrend 21.5% as I do look for a potency serum , if you want a gentle one you can use the klairs one

If you have sensitive skin go for lower percentages and start increasing them gradually according to your skin needs

hard decision! I’ve heard good things about both