On the surface of sunscreen bottle, there is a photosensitive coating, which will turn red after being shined by the ultraviolet light of the sun light, and its color will darken with the increasing intensity. By this way, it wants to remind users to “protect their own skins from being sunburned while being outdoors.” Its whole appearance is global, and you can easily pick it up from the table. After you have used it, you can throw it on the table casually. It will not roll at random, but will be like a tumbler, which makes it interesting and attractive. It cares for users more and thus is full of humanistic care.