People globally utilize cosmetics and makeup for various purposes. The term "cosmetic products" encompasses a broad range of substances and preparations designed to come into contact with the human body's external parts, as defined by its expansive definition. This categorization includes a diverse array of items.
Shampoos and soaps typically include a fragrance and utilize surfactants to cleanse the skin. Surfactants are molecules with both fat-soluble and water-soluble portions. The fat-soluble part attracts oil and dirt, while the water-soluble part allows them to be washed away. Detergents for dishes and laundry function similarly but are formulated with harsher ingredients for solid surfaces. It is not recommended to use these detergents on the body or hair as it may cause irritation.
Lipstick is a cosmetic item that is formulated with hydrophilic characteristics. It is made by blending wax, a stable oil like beeswax and castor oil, and water. This mixture results in a dense substance that does not dissolve in water and can be easily spread on the lips. Due to its lipophilic nature, lipstick remains intact on the lips even when exposed to saliva or liquids. Some lipsticks also contain a dye that interacts with amino acids on the skin's surface, causing the product to appear blue or green in the packaging and transform into red when applied to the lips.
Loss of water from the outer layer of dead skin cells at a faster rate than the living cells underneath can absorb it leads to dry skin. In such instances, using a moisturizer becomes essential. Moisturizers play a key role in preventing further water loss (occlusion) and enhancing the skin's ability to hold moisture through the use of humectants, which boost the skin's water-attracting properties. Humectant moisturizers, containing ingredients like alpha hydroxy acids or glycerine, hydrate the top skin layer, while occlusive moisturizers create a barrier that minimizes moisture loss, allowing the skin's natural rehydration process to restore balance.
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