Extremely impressed with the stength of these Impress press-on nails! They come with the adhesive to attached without glue. It's my second attempt and I'm shocked how long they last! First pair was on for 11 days. Going on 3 days with these. Not one has fallen off! My press-on nails always fall off! I carry around glue with me! LTKbeauty LTKstyletip