Hand and body lotions prevent skin dryness and flaking by providing moisture, creating a protective barrier, and enhancing the skin's natural repair processes. These lotions typically contain a combination of humectants, emollients, and occlusives.
Humectants, such as glycerin, hyaluronic acid, and urea, attract water from the environment and deeper layers of the skin to the outermost layer, the stratum corneum. This helps to increase the skin's hydration levels, making it feel softer and more supple.
Emollients, like oils and butters (e.g., shea butter, cocoa butter, and jojoba oil), fill in the gaps between skin cells, smoothing the skin's surface and improving its texture. They help to repair the skin barrier, which is crucial for retaining moisture and preventing irritants from penetrating the skin.
Occlusives, such as petrolatum, dimethicone, and lanolin, form a protective layer on the skin's surface, reducing transepidermal water loss (TEWL). By sealing in moisture, occlusives help maintain hydration levels and protect the skin from environmental factors like wind and cold, which can exacerbate dryness.
Additionally, many lotions contain ingredients like vitamins (e.g., vitamin E and B5) and antioxidants, which support skin health by promoting cell regeneration and protecting against free radical damage.
By combining these ingredients, hand and body lotions effectively address the underlying causes of dryness and flaking, providing both immediate relief and long-term benefits. Regular use helps maintain the skin's natural moisture balance, keeping it healthy, smooth, and resilient.