I've used this product since the 1990s :) pretty consistently. I've always...

I've used this product since the 1990s :) pretty consistently. I've always found that it gives me a nice glow, didn't upset my skin when I was younger and had acne, and was pleasant to use. Now I'm much older, I have skin that looks younger than I am. Who knows if its this serum, using a mineral powder foundation as sun protection daily or if I just have lucky genes, but I think of this as one of my "slow-ageing" staples. I don't think it has big immediate results, but over time I've found that it works and the few times I've stopped using it I notice a difference (for the worse) and always end up going back to it.