I use it for repair after a disastrous gel removal on my toenails. My nails had become incredibly thin and were breaking in every direction. Well, I can't say it made my nails harder BUT it helped them stay hydrated and grow much faster. I use it twice a day every day since mid-August and within 2 months the big toenails have renewed almost 60%!

Very satisfied with the performance, it really helped my nails recover from consecutive semi-permanent applications.

I noticed slight improvement, but not any dramatic change. It should be used consistently.

It is very expensive and now its price is prohibitive. It strengthens the nails but there is also other keratin on the market that is cheaper and equally effective. It is really a shame to sell it for so much!

I pulled off a gel polish and along with it came a layer of my nail, and my nails were completely tragic and thin...
My beautician recommended it to me and I really think it worked wonders... I thought it was like a hardening nail polish but it's an oil. I applied it 3-4 times a day at first and my nails recovered in a week. I repeat, my nails were very thin, I would feel pain from simple movements or when they touched something. After a week, they had resistance, they were healthier, fuller. I recommend it...

I bought it after searching for hardeners and having used mavala and peggy sage, which I was satisfied with. This product, after correct use for 2 weeks, did something different to my nails, it hardened, cleaned, and lengthened (don't expect miracles). My nails are generally like paper, without me particularly bothering them with semi-permanent dyes. It's worth trying!

Perfect product with very immediate, visible results. My nails strengthened from the first week of use. I will definitely buy it again!

I am a professional and decided to try it because I have tried various treatments for my nails. It is the best thing I have ever put on my nails. From the first day, I applied it three times a day and massaged my nails and cuticles, and they immediately hardened. I should note that my nails are naturally very thin and, in addition, I had not left my nails without any material for about three years. So they were very damaged. It's incredible.

It is as effective as a nail oil can be. I did not notice a remarkable strengthening as it promises.

What can I tell you with 3 applications per day since it is an oil I put on my nails from a drop and I massaged it to let it absorb, I didn't see any difference.. maybe I tried it for only 15 days and then I did 2 gel manicures in a row and my nails are in a terrible condition :(

I learned about this treatment from my nail artist. It is a pure liquid keratin without any irritating factors. She told me that it even closes small wounds on the skin, and I didn't really believe it. I used it a few days later (careful, I'm not saying you should do it too, I'm just saying what I did) on a deep cut from a household knife on my palm that wasn't healing easily, and within two days it had nourished dramatically. As a nail treatment, it's unbeatable. No comparison to others that contain formaldehyde.