I've just started using this product so it's hard to say if I am yet seeing the results of this serum, but I have been using a bifida serum before starting this one. I will say the peptides in the formula make for a cosmetically elegant formula that is comparable to the manyo bifida biome ampoule serum, which I was using before, but this one is more suited towards a dryer skin type in my experience. I have used this as my only serum (aside from actives) every night for a week and my skin is glowing and even toned, and I do believe that the post-biotic ingredients in this help promote that healthy skin that I love.