Dermabase and Aquaphilic are examples of which type of ointment base?

• A. Hydrophilic ointment bases
• B. Water-soluble bases
• C. Oleaginous bases
• D. W/O emulsions

Answer: (A)

Hydrophilic ointment bases are designed to mix with water and be removable with water. They are typically oil-in-water emulsions or water-miscible blends that give a lighter, less greasy feel while still providing moisture to the skin. Dermabase and Aquaphilic are marketed as hydrophilic ointment bases, meaning they can incorporate water, are washable with water, and are less occlusive than purely oil-based bases. This makes them suitable for delivering hydrophilic drugs and for patients who prefer easier cleansing. In contrast, oleaginous bases are oil-based and very difficult to wash off, and pure water-soluble bases rely entirely on water solubility rather than a semi-solid emulsion, so they behave differently in terms of texture and washability. W/O emulsions are oil-continuous and not as easily washed off with water either.