Final answer:
Cosmetic lotions moisturize and soften the skin, with formulations varying between different types of emulsions. Alcohol-based aftershaves can be irritating but effective at killing bacteria, whereas alcohol-free aftershave balms are recommended for sensitive or dry skin due to their moisturizing properties. It is best to use alcohol-free products to minimize skin irritation.
Step-by-step explanation:
Lotions and Aftershaves: Composition and Skin Care
Many cosmetic lotions are designed to moisturize, soften, and sometimes perfume the skin. Lotions are commonly oil-in-water emulsions, with ingredients like cetearyl alcohol helping maintain the emulsion. On the other hand, aftershaves traditionally are alcohol-based and can cause a stinging sensation upon application due to their bactericidal properties. While they have a quick-drying effect and may disrupt microbial cell membranes, alcohols can also dehydrate the skin.
For individuals with sensitive skin or for use during winter, alcohol-free aftershave balms are preferred as they are more moisturizing and less irritating. These balms are often rich in ingredients such as petrolatum, shea butter, and cetyl alcohol, which help to retain moisture. It is advisable to use alcohol-free products and to avoid harsh skin treatments like astringents or exfoliants, which can cause further irritation. Rinsing with lukewarm water can also be beneficial.