Oat Kernal Oil – healing, anti-itch, and soothing, improves dry skin.  Skinceuticals.

Oats (Avena sativa) – antiinflammatory, to calm itching and burning.

Olive (Leaf ) Oil – antibiotic, anti-inflammatory, antioxidant. Helpful to control acne and sun damage. iS Clinical, Sircuitskin.

Orange Oil – from the peels of ripe oranges, antiseptic, soothing, helpful for acne. Skinceuticals.