i have used it for just over weeks and i can say my skin looks better than it has in a very long time [SEP] this might be worthy of stars but i do not know yet i have used it for just over weeks and i can say my skin looks better than it has in a very long time it would seem that this tiny bottle will last for months so it is economical as well i have used prescription retinoids which also helped my skin but i had to be quite careful with them as they can make my skin very dry and flaky if i do not dilute them with moisturizer or use less frequently this product does not seem to have that affect at all i do still use a retinoid in conjunction with this it comes with instructions and you simply wash your face and then apply this prior to any moisturizer or retinoid love it it was a good buy