Nice c-vitamin powder. Easy to use, you can add to any serum or cream. The results are good.

Really great! Only activating the vitamin C when needed is so good. I mix with water and apply in the evening. I've noticed the little bumps and pimples are almost never there anymore, and my skin feels smoother overall

I mix it with my serum every morning and I do believe it makes a difference to my skin! It melts very easily inside a watery serum. It is a very fine powder so I am sure it will be good with a cream as well. I will definitely repurchase.

I think the idea of this booster is great: a powder that you mix in a serum or a moisturiser. However, this will last me forever - no way can I finish the 15 gram bottle in a year. So in a way it is great value for money but then again, I wish they offered like a 5 gram size too. Haven't seen that many vitamin C benefits yet but I'm happy to continue use as it's super hassle free and doesn't irritate my sensitive skin.

Really easy to use, not irritating and I really see an improvement in my skin after weeks use. Pigmentation spots are fading. There is almost nothing out of the bottle so I guess this small bottle will last me easily a year