These products are made by using a special material which looks very realistic. Several times a day, the product will glow in the dark. This is how the product should be used: The product should be applied on clean, dry skin. Avoid applying the product on broken or irritated skin. The luminous tattoos are made of a high-quality ink that glows in the dark. You can use them as a decoration for a special party or as a way to draw attention to a certain part of your body.