I use this in the morning after cleansing my face and decolletage, then I apply moisturizer. In the evening, I shower and apply this after, then my moisturizer. Unlike some serums I have used, Kleem recommends using small circular motions, so that is what I do. It is a nice feeling. Cool. It is a clear serum, not thick, but definitely not watery. You only need a small amount and it absorbs and dries quickly. I have noticed the most improvement on my decolletage. I am only in my mid 40's, but lately I have tried to avoid wearing anything that will show my chest due to the fine wrinkles I have begun to notice. This serum has reversed some of that in only 2 weeks. Amazing!