Your design will be wet for approximately 60 minutes if you don't dry it in front of a fan, but allow it to sit for at least 3-6 hours before washing it off for best results. At first the tattoo appears invisible. THIS IS NORMAL. Your design will start to darken and the color will fully develop over the next 24-48 hours. If you used Red Henna Paste on your tattoo, avoid contact with water in the tattoo area for the first 24 hours after initially washing off the paste. If the gel or paste starts flaking/peeling off early as it dries, you can apply a light spritz of hairspray to help hold it in place. If you go to bed without washing the tattoo off, you must cover the design. Trust me: you don't want to be walking around with a replica of your hand tattoo on your face.