If you're impatient like me, you'll use this for a little bit and think "oh, its doing nothing." and think its time to try something better. But as time goes on, I've noticed a huge change in my nails! They're the longest they've been in a long time! Not 5 stars though because they still do break after awhile, and I still haven't gotten my nails to my desired length. But as I stated, it DEFINITELY makes a difference and is worth checking out!