The ointment base is an integral part of an ointment preparation and serves as a carrier or vehicle for the medicament.

Ideal Properties of a Base

1. Physically, chemically, and pharmacologically inert
2. Nonirritating and nonsensitizing
3. Compatible with skin pH and drug
4. Good solvent and/or emulsifying property
5. Emollient, protective, nongreasy, easily spreadable and removable
6. Able to release medicament readily at the site of action
7. Pharmaceutically elegant and should possess good stability
8. Easily available and economical