Allow the tattoo to dry completely and fully after application. During this time, keep the tattoo free from contact with clothes, water, oil, lotions or moisturizers, since these prevent the ink from setting properly and cause smearing of the design. Do not touch a wet temporary tattoo.
Dust the tattoo with cornstarch, baby powder or a commercial cosmetic setting powder after exposure to water or any kind of moisture such as lotions. Sprinkle the powder on to a wide setting brush and tap the brush against a hard surface to distribute it evenly in the bristles; then brush gently against the tattoo. Allow the powder to remain undisturbed for a few moments, then brush off.
Protect the tattoo during exposure to water, including baths and showers. Place a piece of plastic wrap over the area and secure with tape to create a waterproof bandage. Once finished, remove the wrap and dust with powder again to absorb any residual moisture and keep the design set.
Avoid sleeping on the tattoo and protect the tattoo while you are asleep. Do not allow tight clothing to come into contact with the artwork, since this rubs the design off. Wear loose fitting clothing over the area to prevent friction from damaging the tattoo.