Apply once or twice before bed. (you don't need to reapply every day) Make sure you work it in with your finger until it becomes invisible. It will form an almost invisible barrier that will stay on for long. Maybe you can try keep it on for longer than a week and see what happens but your ec should be cured within a week. You'll know you're cured when your lips have deep vertical lines and the color is more natural. Just be careful not to take it off before 5 days.