This is one of my favorite ways to prep my nails before applying Jamberry nail wraps. I had some trouble with the metallics sticking as long as the patterned wraps, so I gave the black tea prep a shot and it made all the difference.
All you have to do is brew some strong black tea (any variety), let it cool (or stick in the fridge if you’re impatient, like me), and mix in a few drops of blue Dawn dish detergent. Let your nails soak for about a minute & a half (no longer), swipe with some alcohol or acetone and continue on with your preferred application method. Easy peasy!