f you use the adhesive stickers provided, the press-ons will usually last around 5-7 days. If you stick them on with the Doonails nail glue, they will last for approx. 14 days. The durability always depends on the individual application and the stress on the nails.
Possible reasons for a shorter shelf life are:
Pool and salt water
High stress on the nails
Oily oils or creams
Aggressive rinsing and cleaning agents
Incorrect application