I bought this as part of a Philosophy kit. I was worried about trying it because I have sensitive skin and certain products tend to cause redness and irritation. I have always had good experiences with Philosophy products so I thought I would try this as well. I used the serum at night after washing my face. I only need a small amount and it does go on feeling greasy and heavy, but it absorbs very quickly into the skin. The scent was just okay, it was not very strong, but had a slight outdoor scent. This product did work very well with firming the skin, I could see a slight reduction of fine lines, and it did not irritate my skin or cause any redness. I only received a small bottle of this with the kit it came in, so I don't believe I would buy it again, it is a bit pricey. Absorption Goes on feeling heavy, but really does absorb well. Doesn't Clog Pores This product does not clog pores at all, I did not experience any breakouts while using this.