I've been struggling with brittle nails that keep chipping. I wash my hands a lot for work and even the slightest bump would make the tip of my nails break. I also kept my nails short too to prevent that. After reading reviews for Sally Hansen's Miracle Cure online, I tried it out and loved it! Although it did not "cure" my nail problems, it was a great way to prevent it from further breakage. It says to apply a single coat as a base coat, or on top of nail polish, but to also apply another layer every other day. I noticed a difference after a single application because it would harden the nails. You can see the cool cross hatching pattern on the nails too.