You could have a lot of natural body oil that prohibits the product from drying completely so no matter what you do you might always have that problem. Try using a normal mascara instead so that the stain isn’t too intense or you could try have lash extentions done. That’s a good way to be completely free of your mascara problem and it’ll last up to 4 weeks so you can come and go without any running product. If the commitment is too much then try using lashes that you can stick on and remove on a daily basis and apply some mascara to that to give you the same intensity. this will also be helpful for when you are in a hurry or you need to have your lashes looking great for a longer period of time.