Sunscreen Preparation: Sunscreen, also known as sunblock, sun cream, or suntan lotion, is a lotion, spray, gel, foam (such as an expanded foam lotion or whipped lotion), stick, or other topical product that absorbs or reflects some of the sun’s ultraviolet (UV) radiation and thus helps to protect against sunburn.
Hands up if you’ve been told that mineral sunscreen is better than the chemical variety? Now, hands up if you really know the difference. Here it is: Physical sunscreens sit on top of your skin, serving as a physical barrier by deflecting the sun’s rays, and are effective right away. Chemical sunscreens penetrate the skin and absorb the sun’s rays and usually take about 20 minutes to be effective.