Esthetics Core Written Practice Test

Oil-based moisturizers are specifically formulated to provide enhanced hydration and create a protective barrier on the skin. The typical formula used in these moisturizers often contains emollients, which are substances that help soften and smooth the skin by filling in gaps between skin cells. Emollient-rich combinations can include oils, fats, and other similar ingredients that are excellent for both water retention and providing a soothing effect.

In contrast, low concentrations of acids are typically found in exfoliating products rather than moisturizers. High water content is characteristic of water-based moisturizers; these formulations focus on delivering hydration through water rather than oils. Alcohol-based solutions can be drying to the skin and are usually used in products intended to provide a different effect, such as toning or certain astringent purposes. Therefore, the emphasis on emollient-rich combinations is key, as this characteristic is what defines oil-based moisturizers and their effectiveness in skin hydration and protection.