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This innovative nail strengthener helps promote nail growth and has been clinically proven to strengthen brittle nails by increasing thickness, density, and durability of the nail and cuticle. Providing visible results in just 14 days, this nail treatment also uses cationic hyaluronic acid to provide cuticle moisturization.
Key Features:
Use on dry, bare nails for best nail repair results. The first time you use ISDIN Si-Nails, activate the brush by pressing down on the applicator until the brush is moistened (approximately 25 times).
Use only on the nail, and wipe off any excess product from the skin. Visible results may be seen in 14 days, with best results achieved from ongoing application.
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Availability: In stock & ready to ship! . Ships within the U.S. only.
Submit your question about this product to our talented team of Customer Care Representatives, and we'll get back to you as soon as possible!
You can receive 50 rewards points by sharing your honest opinion of ISDIN Si-Nails Fast Absorbing & Hydrating Nail Serum Strengthener.
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40 Reviews
LovelySkin Customer
Verified Purchase
This stuff works quickly to lessen ridges and splitting nails but it’s ridiculous how little you get for the price. I keep buying it because it works so well but it makes me mad everytime and I’ll keep looking for something else.
1 person found this helpful
Sv
Verified Purchase
I tried this after wearing "dip" nails for over a year. After one month I don't notice any improvement. I put it on right before be. so far disappointing. I'm going to finish the container and will update if I see any progress.
1 person found this helpful
SeanNYC
Verified Purchase
I'm a loyal LovelySkin shopper of many years and this is my first time submitting a review here. Please save yourself the money or choose something else for your nails. This product lasted me less than 3 weeks while using as sparingly as possible. I am not sure if most of the product is lost in the built in brush applicator or what, but this was TERRIBLE and my only bad purchase on this site.
2 people found this helpful
GG78
Verified Purchase
I have weak nails, and every strengthener I tried did absolutely nothing. I believe it was in Good America's shopping store that I saw it, thought what could I lose. Well, I just placed my second order, and my nails are not only stronger but not brittle. I recommend this product to anyone with brittle and weak nails.
1 person found this helpful
Neda
Verified Purchase
I like it but I feel like the design is wasteful for the price. I tend to click once for 2 nails so I get more bang for my buck. It dries very quickly.
0 people found this helpful
ChristineRag
Verified Purchase
I’m still new to this product and my nails are very thin and brittle. BUT I am noticing a difference. The only downside is this is meant to be used on clear nails- no polish. Which means I am inconsistent.
0 people found this helpful
LovelySkin Customer
Verified Purchase
I have been using this for a couple of weeks and my nails are still brittle and splitting/peeling. I don't know if it takes longer for this product to work or if it's just not worth the expense.
0 people found this helpful
In2Style
Verified Purchase
Recommended by my dermatologist. It definitely decreased my nail peeling.
0 people found this helpful
ReactiveRachel
Verified Purchase
Great product, noticeable improvement for my weak nails. Try pressing the button slow with a brief hold down to get it started then the applicator works great.
0 people found this helpful
LovelySkin Customer
Verified Purchase
My derm recommended and have seen a difference in a short time
0 people found this helpful
LovelySkin Customer
Verified Purchase
My dermatologist recommended this product due to ridges and thin damaged nails after years of acrylics. I was completely shocked that after 2 weeks they were thicker and the ridges were less obvious. Thank you Thank you! I will continue to purchase.
0 people found this helpful
LovelySkin Customer
Verified Purchase
Nothing comes out of this tube no matter how many times you push the little button. Complete waste of money.
1 person found this helpful
LovelySkin Customer
Verified Purchase
I've tried everything from nail hardeners to Biotin and this is the only nail treatment that has shown quick and long lasting results. Downside is a pen only last for about a month if you use it daily.
0 people found this helpful
Roberto
Verified Purchase
I have been using Isdin's nail hardening product for about 10 months and results are beginning to show
0 people found this helpful
lss
Verified Purchase
I bought because I figured it would help my cuticles which are really dry due to frequent hand washing. It takes a number of clicks to even get the product to dispense. I can't imagine trying to apply to the bed of each nail. Needless to say, my cuticles have not improved.
0 people found this helpful
LovelySkin Customer
Verified Purchase
This is a wonderful product for nails and toenails. My nails were horrible, thin and peeling. I used this little magic wand and they improved so much. Thicker and growing and it takes such little effort. Try it, you’ll be amazed.
0 people found this helpful
Adams
Verified Purchase
This is THE GREATEST Nail Repair and Strengthing I have EVER USED. Believe Me I have TRIED them All. It is SO EASY to APPLY and RESULTS that you can Visible be seen in 2 weeks. If you have tried as many Nail Strength and Growth Enhancing products as I have and they all didn't Work, then you have GOT to Buy this Repair which I Can Promise You WILL BE Happy you did.
0 people found this helpful
LovelySkin Customer
Verified Purchase
Love, love this product! It has done wonders for my nails which were severely damages by Dip/gel manicures and improper polish remover. Catch it on sale and stock up!
0 people found this helpful
LovelySkin Customer
Verified Purchase
keeps my cuticle hydrated <3
0 people found this helpful
Bluzegirl
Verified Purchase
Easy to use, travels well. This formula soaks into nail and cuticle- not oily. I use regularly, fingers and toes. I really helped me get my nails healthy. I use it to maintain.
0 people found this helpful
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