Make sure you know about the weather before wearing this out. Make sure there’s no chance of rain. My friend had wet hands and touched my hair, it instantly came off onto their hands. If you touch your hair with dry hands some comes off as well. The color stays on pretty long as you are not touching it. They recommend not wearing light clothing. I didn’t notice any fall out on my shirt but I think it might be because of the placement I did the color at (I did it in between layers). I also ended up sleeping in it with my hair up and the next day I still had color left. It wasn’t as vibrant but it was definitely noticeable. That should give you an idea about the staying power!