Dry skin
Combine 10 parts water with 1 part lavender (Lavandula angustifolia) essential oil. Mist lightly over freshly washed face or body once daily. Wait at least 30 minutes before using additional skin care products. "Lavender is a soothing and moisturizing miracle medicine that can be used safely on all skin types," says Laura DuPriest, a cosmetologist and aesthetician in Sacramento, California.

Oily skin
Combine 10 parts water with 1 part orange (Citrus sinensis), lemon (Citrus limon), grapefruit (Citrus paradisi), or lime (Citrus aurantifolia) oil. Mist lightly over freshly washed skin on your face or body once daily. Wait at least 30 minutes before using additional skin care products. "All citrus oils contain citric acid, which is great for toning oily skin," says DuPriest.

Pimples
Combine 4 ounces of water with 1/2 ounce tea tree (Melaleuca alternifolia) oil. Gently mist and massage into the freshly washed, blemished skin on your face or body once daily. Wait at least 30 minutes before using additional skin care products. According to DuPriest, tea tree oil is an antiseptic that can be used to fight the bacteria in troublesome blemishes.

Dry hair
Combine 4 ounces of water with 1/2 ounce sandalwood (Santalum album) essential oil. Mist and gently massage into hair just before bedtime. Wash hair the next morning. Use this treatment once or twice a week. DuPriest says, "Thick, rich, and heavy sandalwood oil is used to moisturize dry hair, even in the desert."

Dandruff
Combine 4 ounces of water with 1/2 ounce rosemary (Rosmarinus officinalis) essential oil. Mist and gently massage into scalp just before bedtime. Wash hair the next morning. Use this treatment once or twice a week. "Rosemary can have a cooling and soothing effect on an itchy scalp," says DuPriest.

Note: Before using any essential oil mixture, put a drop on the inside of your arm and leave on for 24 hours to test for possible allergic or irritating reactions. Preserve all essential oil blends in dark bottles to prevent them from breaking down.