Lemon Seed Oil - not to be confused with Lemon essential oil - is pressed from the seeds of the Lemon. It is naturally full of Monounsaturated and Polyunsaturated fatty acids which are great for nourishing the skin and increasing barrier functions. Lemon Seed Carrier Oil is also great for your hair. It penetrates the hair shaft and leaves the hair looking shiny and healthy. You can use a small amount as a leave in conditioner, but keep the quantity quite low to avoid having oily looking skin.