Base and Carrier oils may be used individually or mixed with essential oils.  Base products are aloe vera gel, witch hazel, lotions, baths, liquid deodorants and carrier oils dilutes the intensity of the essential oils.

Some essential oils are harmful to the skin.  Others can cause sensitivities or drying on some skin types. Some essential oils can be applied directly to the skin (e.g., lavender, which is beneficial for burns and insect bites).

A few drops of essential oil mixed into your choice of base or carrier oil will normally be absorbed by osmosis and will achieve the same effect as the undiluted oil, while being less harsh on the skin.  Following are several examples of natural cosmetic grade carrier oils.  (Come in 4 oz. )

JOJOBA OIL 
From the Jojoba Bean. A liquid
wax base oil similar to natural secretions produced by the skin. Jojoba oil hasantioxidant properties. It keeps skin and hair moisturized and nourished for long periods of time. Also high in vitamin E and collagen. For all skin types. 
Comes in a 4 oz.

UNSCENTED DEODORANT
Non-aerosol, pure and natural
hypo-allergenic liquid deodorant. Contains potassium alum (salt)
and purifiedwater. Same quality
of a deodorant stone, but in liquid form. Twenty-four hour protection, non-staining. Just one mist per underarm is all you need.  May be used on feet to prevent odor.
Can be used as a base carrier by
adding a few drops of lavender
or patchouli essential oil for a naturally-scented Deodorant.
Comes in a 1 oz. and 2oz. Spray.

1 oz. Funnel $.99