The sperm bind through the corona radiata, a layer of follicle cells on the outside of the secondary oocyte. Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.
One of the most beneficial essential oils for skin care is geranium oil. This oil contains nutrients that help hydrate the skin, which is imperative for the regenerative process of skin cells. This oil is generally considered safe for sensitive skin, as well for those with frequent breakouts.
Oxidation occurs when an essential oil is exposed to oxygen. Consistent contact with air will deteriorate the oil and increase evaporation. All is not lost if this occurs. The oils can still be used for cleaning product recipes and even some diffusion, but should be avoided for therapeutic reasons and all skin contact.