Sunscreen lotion is a topical product designed to protect the skin from the harmful effects of ultraviolet (UV) radiation from the sun. It contains active ingredients that either absorb, reflect, or scatter UV rays, helping to prevent sunburn and reduce the risk of skin cancer. Sunscreens are available in various forms, including lotions, creams, gels, and sprays, and are often labeled with a Sun Protection Factor (SPF) rating that indicates their effectiveness. To use sunscreen lotion effectively, it should be applied generously to all exposed skin at least 15 minutes before sun exposure. Reapplication is necessary every two hours, or more frequently if swimming or sweating. Regular use of sunscreen, along with other protective measures like wearing hats and seeking shade, can significantly enhance skin protection during outdoor activities.