My nail was so bad most of it fell off except one tiney shard, (yes very creepy) I used this once let it sit on my nail for about 30 minutes then wiped off and cleaned and that's all I did over the next month or two my nail grew back in healthy. I suspect if I had used daily it would have worked faster but I was unfortunately super busy at the time and traveling. Definitely worth the money and now I pop on if any nail seems a bit unhappy. Maybe everyone should keep this on had in the house! Vender was excellent also and even in my state!