Composition of sunscreen and color-changing markers

Abstract

A sunscreen/sunblock product that combines sun protection and color marking activities intended to encourage use of sunscreen, especially among young children. The sunscreen/sunblock product also enables a user to visualize when the product needs to be re-applied. The sunscreen composition incorporates a color-triggering developer into commercially available sunscreens. This sunscreen product may be used as a regular colorless or colored sunscreen. A marking composition containing a color precursor is also prepared. A marking device may be utilized to store and/or apply the marking composition to the skin which is covered with a thin layer of the sunscreen product. Color markings are formed through the reaction of the color-triggering developer and the color precursor. The color markings typically stay on the skin only as long as the sunscreen is on the skin, thus providing an indication that more sunscreen needs to be applied for adequate sun protection. The color markings are also washable in the event that the color is inadvertently transferred to an unintended surface.

Dependencies are inferred from the claim text.