ISDIN Si-Nails - Fast Absorbing Nail Strengthening and Hardening Serum for Nail Durability in Thin Nails, made with Cationic Hyaluronic Acid 0.08 FL OZ

I'm 61, I have picked at or bitten my nails most of my life. In the last 20 years my nails have increasingly gotten thinner, weaker and peel at the edges. 5.5 months ago I got gel nails and LOVED them... until they had to be removed and one came off. I replaced them and the tech was terrible. She filed a few nails down too much and it burned for days. I finally had them removed and 1/4 of my nails were really damaged. I researched this product and decided to take the expensive plunge. I admit they looked 'better' immediately. I put this product on 2x a day morning and night. Avoiding the cuticle, While my nails didn't stop peeling it took a few months before I saw a dramatic improvement. My nails have grown faster than normal, probably 40% (guessing) harder, and absolutely stopped peeling after about 3 months. It really is like turning back the clock to my 30's. Better yet, I still pick at them but because they are thicker and don't peel, there' less incentive to do so. Now I rather use a nail file :) Oh and I had an old damaged toe nail issue and used it on it and wala! Looks great & normal after just a couple weeks!

I have tried dozens of products like this for my nails over the years. This is the first that works -- and it works amazingly well, even on my weak, brittle nails. It began strengthening my nails in ways that were obvious within the first couple of days. My nails were longer and stronger well before the first week was up. Although it strikes me as expensive, I plan to keep using it, because it actually works!

It seemed like the (maybe) week’s worth of product that I got from this applicator was doing good things for my nails. But there’s no way that can be all the product you should get for $39 ! Very VERY disappointed. I do NOT recommend and will not be wasting my money on it again. Such a shame, bc it showed promise on my chemo wrecked fingernails 😢

I have waited four months to write this review because it just seemed too good to be true. But it is true. I am a senior citizen who suddenly found all my nails chipping, cracking, and splitting. I thought about posting a "before" picture, but they looked too awful. I used to try to hide my hands when in public. I tried nine months of biotin capsules, and no results. I found a recommendation from other users online of the ISDN product. When I started using it, I was completely skeptical. The product is clear, thin, and more like water than anything else. I could not see how this could work. It took six to eight weeks before I began to see genuine results - tiny 1/8" nails taking the place of nails that looked like they had been chewed off by rats. Now, five months on, I have 1/4" normal-looking nails that make me happy every day. I have to file them to keep from getting too long, but not in order to even out breakage. They don't seem to chip or break at all under normal use. I actually took the ISDIN box to show my doctor. She said they often have people ask for help with breaking nails, and they never have anything to suggest. She took down the info about this product.For me, a container lasts about two months or longer. I have noticed that the applicator doesn't always work the way the instructions say. Often I get enough product from one "click" to do a whole hand. Other times, the applicator needs to be primed several times. But I don't care as long as it works SO well.Reading over my review, it looks like someone paid me to write it! It's all true.

I’ve been using this off and on for about 2 months and have noticed a difference on my brittle, peeling nails. I’ve tried dozens of different products and nothing else has helped. I’ve put this on my bare nails 3-4 times a week at night (when I wasn’t wearing nail polish) and it has drastically reduced the peeling and cracking that has taken over my nails as I’ve gotten older. It is pretty expensive but I’m on the same tube 2 months later so it’s definitely worth a try!

This stuff was literally an answer to prayer! HIGHLY RECOMMEND! I had been struggling with thin, peeling nails for over a year. I had back-to-back surgeries and my dermatologist told me my damaged nails were probably a result of the anesthesia. (I've never done regular manicures and very rarely polish or gel, so I couldn't blame that.) My nails were so thin they hurt and they would continually split and peel no matter how much I used nail strengthening treatments or polishes. I was at my wits end and tried ordering ISDIN as a last resort. I thought it was a little expensive at the time, but now I believe it was worth every penny! I keep an extra tube on hand now so I never run out.The product and brush are so easy to use. In the beginning I applied it twice a day but tried to keep using it at least once a day for two months. Now that my nails have improved I use it about every 1-2 days. The product is easy to apply and dries and disappears very quickly. I was worried it would be messy and sticky but it is not at all. Sometimes it takes one click per nail to get it going, but sometimes one click will treat a few fingers. A little goes a long way and you will get the feel of it.The product does take time to work. It was 2 months before I had a complete nail grow out without peeling. They are strong now but I am still careful to not use my nails as "tools" so that I don't break them. I still have a split on my thumbnail but I believe it will grow out as long as I am careful and keep applying the product every few days. I will say my nails are a little "ridged" and I don't know if that's just my nails or a result of the product, but it is a small price to pay for strong nails and I can just buff them down smooth.The photos you see are: 1. at the beginning of use, 2. after 6 weeks of using the product, and 3. at 2 1/2 months (they do grow longer but I like to keep them short)Don't hesitate! Buy this product!