Sally HansenDiamond Strength Nail Hardener 45095 Clear, 0.45 Fl Oz, Pack of 1

IT WORKS!!! I use this faithfully. I've used other expensive brands and they don't compare. My nails look great for at least 10 days and sometimes longer. My nails and the polish become super strong and durable. A smooth strong base coat.

I like this a lot. It is hard and durable and excellent for a top or under at depending on your needs. In example, i.e., Stronger nails or stronger coat. Very good stuff. The bottle cap is kind of slick.

I thought my once-strong nails were a victim of my age, but it turns out that if I use Diamond Strength and take a little more care with water and detergent, I can grow my nails just as well as when I was young. It looks nice, too.This is the only product, whether drugstore or stupidly expensive, that clearly improves the quality and strength of my nails and protects them more than I deserve, given the way I forget to use gloves for cleaning. There's a big difference in my nails when I use it vs not.It goes on easily, despite the uniformly terrible quality of the brushes in Sally Hansen products. It dries very fast, and doesn't chip -- in tends to eventually wear off the tips.I have pretty significant ridges and three coats makes them invisible, and really protects my nails, too. But even a single coat really improves the look of my nails.

I've been using Sally Hansen's Hard as Nails clear polish (about $4) for a year now, and its been great. This diamond strengthener definitely makes your nails harder, but its consistency is much thinner than the Hard as Nails, meaning it flakes more easily. Protection on the nails is great, but you may have to apply more frequently/do touchups every 2-3 days. I'd use this more as a base coat than a standalone product like the Hard as Nails.

lower odor - hoping it hardens better than $$$ others - will update soonUpdate: it IS helping breakage, doesnt chip much either..it IS drying strong/ hard!!!!!!!!!!I wish bottle was see thru - hard to know polish level.

It helped my nails not to break easily.It hardened my nails for sure.

Not as hard as nails as described. The polish easily washes off during rehular hand washing. I'm disappointed with this purchase.

Nails seem to chip or break less. I like it being clear and natural.