I use 2 drops from Herbivore Botanicals Emerald Deep Moisture Glow Oil (100 mg) in the morning and 4-5 at night. I like to put this on right after I wash my face- it never gets that tight stretch feeling or makes me itch. It is calming and I feel like my face which is usually a bit red on contact from anything is actually normal! I will absolutely be using this daily. I really like the feel of this serum. It is not so heavy that it will make my skin greasy if I follow with the moisturizer. I live in a very humid climate, so that is a challenge. The Emerald line has been very helpful in eliminating my hormonal breakouts and balancing my skin’s moisture content. No more oily spots next to dry patches, and no more pimples! I am very pleased with the Herbivore Botanical products. I searched for a very long time to find an effective routine for my changing skin. I purchased the starter kit, which is generous enough to really give you an idea of whether the products will work for you.