I have a black tattoo on my foot that im not so worried about since my dress will be covering but for the rehersal im planning on wearing a short white dress, but I also have a few on my upper back and my dress is strapless. Ive been looking at many products. ive looked at dermablend at ulta and the lady told me it will take forever to cover up with it and will need to apply multiple layers. Ive went to sephora and took a look at the kat von d and it was nice but I asked the girl there and she recommend coverFX which i thought was better, but just worried that it will run if sweating since my wedding is in august or may not work as well. dont wanna spend that kind of money and bad results. any advice???