I love that the gems are all connected which makes putting them on SO easy! On first use, I made sure to put on my clean, dry skin (applied makeup afterward, around it) and they stayed securely on for 6 hours outside while playing kickball! It wasn't a hot day, so I didn't sweat too much, but they stayed on very nicely! When I took them off, I put them back onto the original sheet, back into the package and wore them again (no extra glue), a couple of days later for 5 more hours in the evening! See full review