Dress up a pirate costume with this glowing eye patch. This eye patch will get you seen on Halloween. Glow products are safe for normal use. Depending on size of product it will glow between 4 and 12 hours. Activate by pressing between thumb and forefinger until a spot of color appears. Knead entire surface until GLOW saturates the area. Glow products are great for parties, dances, campouts, firework shows, gifts, costumes, or fundraisers.