This article is about the skin treatment. A lotion is a low-viscosity topical preparation intended for application to unbroken skin. By contrast, creams and gels hand cream higher viscosity.
Lotions are applied to external skin with bare hands, a brush, a clean cloth, cotton wool, or gauze. While lotion may be used as a medicine delivery system, many lotions, especially hand lotions and body lotions are meant instead to simply smooth, moisturize and soften the skin. Dermatologists can prescribe lotions to treat or prevent skin diseases. It is not unusual for the same drug ingredient to be formulated into a lotion, cream and ointment.
Since health care workers must wash their hands frequently to prevent disease transmission, hospital grade lotion is recommended to prevent skin dermatitis caused by frequent exposure to cleaning agents in the soap. A 2006 study found that application of hospital grade lotion after hand washing significantly reduced skin roughness and dryness. Care must be taken not to use consumer lotions in a hospital environment, as the perfumes and allergens may be a danger to those who are immunodeficient. Most lotions are oil-in-water emulsions using a substance such as cetearyl alcohol to keep the emulsion together, but water-in-oil lotions are also formulated. Since thickness and consistency are key factors in lotions and creams, it is important to understand the manufacturing process that determines viscosity. Emollients and lubricants are dispersed in oil with blending and thickening agents. Perfume, color and preservatives are dispersed in the water cycle.
Active ingredients are broken up in both cycles depending on the raw materials involved and the desired properties of the lotion or cream. Step 3: Prepare the water phase containing emulsifiers and stabilizers. Step 4: Mix the oil and water to form an emulsion. Careful note should be taken in choosing the right mixing equipment for lotion manufacturing to avoid agglomerates and long processing times. It can make all the difference in manufacturing time and costs.
Conventional agitators can present a number of problems including agglomerates and longer processing times. On the other hand, high shear in-line mixers can produce quality lotions and creams without many of the complications encountered with conventional mixers. Depending on their composition, lotions can be comedogenic, meaning that they can result in the increased formation of comedones. Sufferers of acne, or those who are predisposed to forming comedones, should look for formulations that are designed to be noncomedogenic. All topical products, including lotions, can result in the percutaneous absorption of their contents. Though this has limited use as a route of drug administration, it more commonly results in unintended, and often undesirable, consequences.
A 2015 study funded by the California Breast Cancer Research Program found that parabens, a common ingredient in cosmetic lotions, stimulate breast cancer cell proliferation. There is currently no regulation over use of the term «hypoallergenic», and even pediatric skin products with the label were found to still contain allergens. Lotions are mainly intended to help the skin, but it can also harm your skin. Christina Marino, who practices at Johns Hopkins Community Physicians, has conducted much research on this aspect.
Moisturizers contain ingredients that are either occlusive or humectant. Occlusive agents are used to help block the loss of water from the skin. Humectant agents are used to attract water to the skin. What’s The Difference Between An Ointment, A Cream And A Lotion? Wrinkle Treatments and Other Anti-aging Products». Washington State Department of Labor and Industries.