Works great!
It's a little tricky to cut and put onto nails but works GREAT.  I have a nail that splits vertically and have been using gel polish for quite sometime.  Even with gel I could never let the nail grow out.  I using the gel foundation to adhere the silk and after more than three my thumb nail is longer than it's been in years. I'm sure I'll get better as I practice, but it was worth the extra time.
Rating: 5 stars