Question

which preparation require more preservative : lotion or paste, give reasons ?​

Answer 1

Explanation:

An ointment is 80 percent oil and 20 percent water. A cream is 50 percent oil and 50 percent water. A lotion is similar to a cream but it's an even lighter or less thick formulation. Any of these can be used with different over-the-counter products or drugs, depending on whether your skin is dry or oily.

Pastes are very thick and stiff, Ointments are soft semisolid preparations. 3 . Pastes are less greasy , Ointments are more greasy. ... Paste contains a large amount of powder which is porous in nature,hence perspiration can escape.