Protect yourself from the harmful UVA/ UVB rays that cause skin aging & burning, for sunblock I preferred to use lotion spray because it’s easier to apply. You’ll just spray it evenly to your existing moisturizer 20-30 mins. before sun exposure. I bought this for only $12 last June ’08 with the sun’s harmful effect it must be used daily but I only used it  occasionally or whenever I feel like! hehe! =)