Nail Optimizer One-Step Multi Use Nail Fortifier, Nail Hardener, Nail Strengthener - Optimum Strength Nail Treatment (Refill Size) 4 oz/ 120 ml

My nails were damaged after using gel polish for a long time. They were thin and peeling. About 4 months ago I purchased my first Prolana Nail Optimizer. I kept them short for the first month and then have let them grow since. I am extremely pleased with the results. I finally have nails again. I don't have the peeling any longer

Great product!

I've purchased individual bottles in the past....never knew there was a larger bottle to refillwhat I have. Glad to have the larger refill size.

This new version of Nail Optimizer is much better than the previous version and I thought that was very good! This is used as a base coat, in addition to a top coat, and it cleared up my soft and peeling nails instantly!!

Great product and great price. Has really strengthened my nails. I paid $13 for 0.5 oz at a nail salon. Now I can just refill the bottle with this one.

A nail tech introduced me to this many yrs ago/haven't needed fake nails since

Great price....this is all my manicurist uses, both as base and top coats.

Don't see that it's helped. Feels strange. The top is too large.