Will your tattoo darken up after peeling?

On the contrary! Tattoos tend lose their glossy shine (become duller) and lighten up a bit after peeling and once it is healed. The change in color is not drastic. After time, your tattoo will gradually lighten even more, and if there is quite a bit of thick coloring, it will space, meaning small gaps in the color will be visible. Touch ups every few years are very normal for maintaining a tattoo. You won't be charged as much for touch ups as you did for your initial tattoo, and it is useful to restore the color and keep your tattoo looking brand new. Good luck!