A lotion is a low viscosity topical preparation for applying to unbroken skin. While most of the lotions are used as a medicine delivery system, it is body lotion that is used primarily for smoothing, moisturizing and softening the skin.
Dermatologist prescribe lotions to treat or or prevent skin diseases.
Historically, body lotions had an advantage in that they can be spread thinly compared to a cream or ointment and, economically, cover a large area of skin.
Body lotions can be used as antiseptics, antibiotics, anti fungals, anti acne agents, and corticosteroids.
For dry skin, body lotions increase the skin hydration (water content) by reducing evaporation. In such cases, body lotions works as an occlusive (by forming a thin film on the surface of the skin to prevent the loss of moisture), humectants (by attracting water vapor from air to moisturize the skin), and by restoration of deficient materials such as amino-lipids.
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