This is the best nail strength product on the market. I have been using since the product first came out some 10 years I believe. I was a chronic nail bitter but found after trying to grow my nails they were soft and would peel and not grow very well. I started using this under my nail polish an it is part of my nail routine. I now have very long and hard fingernails. I garden and hardly break a nail. I also hand wash dishes so I have hard working hands and my nails stand up to the test.

Used this over years with excellent results, but last time purchased it didn’t do the job as it has in past. Has formula changed??? Very disappointed if so, if something works well, leave it alone

Had been using this product for years and it was amazing. Recommended it to many people as it truly lived up to what it said. Bought a new bottle recently and it is terrible. Formula is thin and watery.
My nails are now in worse condition then ever. They are chipping right down to the nail bed and also splitting.
Not worth purchasing again.

It used to be really good but I also think the formula has changed. This product makes my nails split and become weaker than ever. I am better off using nothing

Have used Revitanail for years, and have always loved it. This time they only had the whitening glow in stock.
I feel I have wasted my money, as it has not helped with strengthening, and even with 3 coats, it is so streaky that you have to put nail polish on top of it for it to look decent. Disappointed

My nails were in appalling condition from having sns & acrylics. I tried several nail hardeners 2 of the top ones in fact. Problem is they dry up the cuticle area & can make your nail bed throb. A friend suggested Revitanail original nail strengthener, I saw a difference in a week....im not joking after a month my nails look amazing no more nail salons for me!!!

My fingernails had been flakey all my life and would break easily. They were a mess. A beautician recommended Revitanail Keratin Strengthening Serum and Revitanail Strengthener and from the moment I started using them I have had strong and later thick nails. I follow the directions exactly, use the serum at least twice a day and get great results. I am definitely a satisfied customer.

I have tried SO many supposed nail treatments that prove to be a disappointment time after time. Went back to Revitanail Nail Strengthener as a last resort to try to improve my nails from splitting and chipping. I alternated this with the hand cream (which I think was the positive in this treatment). I do not have the long strong nails that I have had but given my age factor there is a decided improvement after a few weeks. Thank you once again for this excellent product.

The Original Dr Lewinns nail strengthener worked well. When I ran out, the only one I could get was Revitanail. I use it to stop my nails splitting and flaking. This product promotes splitting and flaking. I can't use ordinary nail polish as my nails start deteriorating immediately, but using Dr Lewinns at least gave them a shine. Now there seems to be nothing I can use anymore. Was there a change in the ingredients some time ago?

It certainly did harden my nails, but if you are looking for a long term fix for brittle nails, maybe you need to look at dietary supplements or something. Revitanail does the job, but the new growth is still brittle, therefore I would have to keep using the product ... forever! It also sends my nails yellow after a while and it has an unpleasant chemical odour which tends to linger even after my nails have dried.

I couldn't agree more with the previous reviewer. All my life I've had weak, flaking nails. I thought I'd tried every nail strengthener on the market, with no results. Someone then suggested Revitanail, and although it was pretty expensive I was desperate. Without a doubt, it's the best product I've ever bought for my nails.......they're now strong and actually growing longer without flaking off!

This is the best nail product in the world. I have naturally brittle and flaky nails. As soon as I use Revitanail I see positive differences in just a matter of days, The bottle is quite large which does get a little gluey after a few months, but by that time if used correctly your nails should be longer and stronger. A beauty must have.