Qualified Medication Aides (QMA) Practice Exam

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What type of base does Desitin cream have?

Water-based
Alcohol-based
Oil/petroleum-based
Vegetable oil-based

The correct answer is: Oil/petroleum-based

Desitin cream is primarily oil or petroleum-based, which contributes to its effectiveness as a barrier cream in treating and preventing diaper rash. The petroleum base helps to form a protective layer on the skin, preventing moisture from irritating the skin. This type of base allows the cream to adhere to the skin for longer durations, providing sustained protection and healing. While water-based products may offer some moisture but are less effective in providing a barrier, and alcohol-based products can be drying and potentially irritating to sensitive skin, the oil or petroleum base in Desitin is specifically designed for its soothing and protective properties. Additionally, vegetable oil-based options might provide some moisture, but would not offer the same consistency and barrier effect that oil or petroleum-based preparations do. Therefore, the choice of an oil/petroleum base is crucial for its intended use and efficacy in healing minor skin irritations.