W/O emulsions, absorption bases, are also known as?

W/O emulsions, absorption bases, are also known as?

• A. Hydrophilic ointment
• B. Eucerin
• C. Aquaphor
• D. White petrolatum

Answer: (B)

Absorption bases are ointment bases that can take up water and form water-in-oil emulsions, allowing you to incorporate an aqueous phase into an oil-rich base. A classic brand example used to illustrate this type is Eucerin, which is a water-in-oil emulsion base that behaves as an absorption base by absorbing water to form a stable W/O emulsion. The other options don’t serve as the standard teaching example for this category: white petrolatum is purely oleaginous and doesn’t emulsify with water; hydrophilic ointment is designed to be water-removable (often behaving as an O/W or water-miscible base); Aquaphor is another petrolatum-based healing ointment but isn’t the typical representative used to illustrate absorption bases that form W/O emulsions.

Absorption bases are ointment bases that can take up water and form water-in-oil emulsions, allowing you to incorporate an aqueous phase into an oil-rich base. A classic brand example used to illustrate this type is Eucerin, which is a water-in-oil emulsion base that behaves as an absorption base by absorbing water to form a stable W/O emulsion. The other options don’t serve as the standard teaching example for this category: white petrolatum is purely oleaginous and doesn’t emulsify with water; hydrophilic ointment is designed to be water-removable (often behaving as an O/W or water-miscible base); Aquaphor is another petrolatum-based healing ointment but isn’t the typical representative used to illustrate absorption bases that form W/O emulsions.