I discovered lavender essential oil when I was in the south of France one summer. A farmer was selling it from his cart and the fragrance helped me get through a period of insomnia. I include lavender oil in each of the creams, although there is more added to the night cream, as an aid to relaxation. From Organic Facts:

According to dermatologists and aromatherapists, lavender essential oil is one of the most beneficial oils in the treatment  of acne, which is a very uncomfortable and embarrassing condition that  primarily affects young people as they move through puberty, but can  also afflict adults. It is characterized by red, raised sores on the  face and body that develop due to a bacterial infection near the sebum  gland. When sebum cannot be properly secreted from the sebum glands on  the face, it begins to build up, particularly because puberty stimulates  extra sebum and bacteria feed off of it, creating a vicious cycle of  irritation, infection, and visible sores that can result in serious  scarring.

Lavender  essential oil inhibits the bacteria that cause the initial infection,  helps to regulate some of the over-excretion of sebum by hormonal  manipulation and can reduce the signs of scarring after the acne has  begun to heal. Adding a small amount of lavender essential oil to other  skin creams or ointments can greatly increase the potential for relief  and healing

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 It is used to treat various skin disorders such as acne, wrinkles, psoriasis, and other inflammatory conditions. It is commonly used to speed up the healing process of wounds, cuts, burns, and sunburns because it improves the formation of scar tissues. Lavender oil is also added to chamomile to treat eczema. (Read more.)