Quimica Alemana Nail Hardener 0.47 Fl Oz Pack of 2

Better than ever. Now thinner and when applied looks like I am wearing a light white nail polish and I use it as such. Reapplied it a few days later with a clear nail coating and then a quick dry--stronger and prettier now--no need for a colored polish.

Been using this product for over 5 years and it still is the best I have tried. Your nails grow faster and stronger. No chip nails anymore.

My friend from Venezuela recommended this product and stated that it works great for nail strength and growth. I love this product and it definitely works great. I took a picture and these are my nails after using this product for a while now. I have nothing on them but polish.

This nail polish strengthener is amazing. It works so well especially for damaged nails from the salon like dips or gels. I am thoroughly impressed with this and would highly recommend it. I have purchased 4 bottles so far.

Me encanta este producto te fortalecen las Uñas te las hace endurecer. Y las uñas queen espectacular y con un crecimiento bello y fuerte

I put this on my nails and within minutes my nail beds were on fire,the pain was so excruciating. My heart began to beat so fast and loud, I was dizzy and then the beeping in my ear was so loud. I was going to pass out! I was sweating perfusely and it hadn't dawned on me it was the polish. I thought I over filed them so I sprayed them with the blue spray they gave me after my pregnancy. It helped the smallest bit but I was still sweating and dizzy. I got some ice from the freezer put it on my neck and tried to just keep from passing out but it didn't help much. For 3 minutes I am scrambling to catch my breath and save myself from passing out. So I jumped in the shower fully clothed and ran cold water on my head and my neck. When the beeping stopped I got out the showers and realized the burning was coming back so I got acetone and cotton and took this poison off my nails! I finally started to feel normal a few minutes later, after fighting for my life for ten minutes. This shouldn't be allowed to be sold. I'm getting a refund but I don't think anyone else should have to suffer. Read all these reviews because I didn't and I could've died had I passed out and hit my head. I'm home alone. The makers need to be held accountable!

I like the fact that for me it has proven to be most effective and helpful. I did stop using it for several months and lost all the benefit it had provided during the time of usage. This is for me a great base .

I have bought 3 of this product so far because it works so well. My nails used to peel and split relentlessly. They have thickened some, but genetics can only get me so far in that category. I have never been able to grow my nails as long as this product has allowed me to grow them. I now have to file them down because I can't type properly if they get too long. Never thought I'd see that day. I do follow general nail care guidelines to protect them on top of using this hardener - like keeping them polished to keep them stronger and not using them as tools to open things.There are several caveats that aren't dealbreakers for me, but may be for you. This product smells SO bad and STRONGLY. I attribute it to the formaldehyde (which may be a separate problem for some people) but I'm no chemist. Also, the brushes are absolute garbage. frayed on the ends, and the end of each bristle is snagged, as if the tips were heated/melted after cutting them. They are also lopsided. I had to clean, heat, reshape and gently trim the brush to get it in to a barely usable state. I may just end up replacing it with another brush altogether.All in all, I still highly recommend this strengthener.