@donasmrs-- I'm using a placenta serum since the past week and I like it. It hasn't been very long but I am starting to see results already. My skin is firmer and feels a lot softer than before, I have dry skin and this serum is very hydrating. I've heard that it helps with blemishes as well but I think I need to use it a little longer to see those results.
Overall, I recommend this serum, definitely give it a try. Mine is not very expensive. There is no reason for you to buy one that cost a lot. Also, make sure that the serum is a real sheep placenta serum. There is also something called plant placenta and some serums containing this ingredient are also labeled as "placenta serum." So look at the ingredients list carefully before buying.