I bought this after reading the reviews on MUA, I LOVE this product. I have thin brittle peeling nails that break easily, I have nails that polish stays on about 24 hrs (if I'm Lucky) before it peels off or chips. I've tried CND Shellac -absolutely destroyed my nails-made them more brittle and peeling. Plus the Shellac started to peel off after the 2nd application continued to wlorsen with each app. I've tried OPI Gel-not as hard on my nails but peeled off also. Long story short, THIS product has made my nails GROW-no chips, no peeling AND IT STAYS ON FOR 5 days!! WHich for me is AWESOME since I'm a nurse and have my hands in water, Alcohol etc. I've tried OPI Nail Envy-peeled off first day and that was applied at a Salon, Nailtiques which worked for 2 weeks then it started peeling off, Lippmann Hard Rock peeled off 2nd day, NailTek 2 Hydration which peeled off after 3 days. This is my HG!!! I use The Bonding Basecoat with it. I put base coat then 2 coats IA and then another coat of base coat. So far this has worked the best, no chipping and no peeling of polish and I dont wear gloves when I do dishes and like I said, I'm a nurse. So happy with this product, and I've invested about $80 in OTHER products that don't work. This was totally affordable to me and the basecoat was about $8, so about $16 for the both which is TOTALLY WORTH IT!!

Love the product. Does wonders for my nails. No splits, no chips. Fantastic. Ran out a while ago and have searched high and low for it, my regular company did not have it. After some Googling I finally found it at Nancy K Brown Aesthetics. Guess what - they sell the entire Salon Sciences line of nail products. Thought I share this for all you gals having trouble getting it.

This really does make my nails harder and stronger. As soon as I stop using it my nails chip and break! I use this underneath a regular base coat.

This stuff works! That's all there is to it... It will turn your regular polishes into a gel polish. I have been trying to nurse my poor nails back to health after months of wearing acrylics and I could not get them to stop breaking/chipping as they grow out! This has made such a difference - I will definitely repurchase.

I use 1-2 coats as my base and then apply color. I've read that it doesn't wear well alone - as in it chips off easily. I suggest trying 3 coats it you plan to wear it alone.

The only nail hardener that I've tried that actually does what it's advertised to do. Makes my nails hard and tough. Since my nails are naturally weak and tear and peel easily, I make sure I keep this on my nails at all times. Inexpensive and effective.

This is a great product and does what it claims. Before, my nails were so thin and razor sharp that one night I accidentally brushed my nail against my husband's arm and drew blood! After that I checked the nail board and this was recommended to thicken my nails. After practically just one use, my thin nails felt considerably thicker and since I've been using it (I'm almost done with my first bottle) I haven't had one nail break, crack, split, etc. Wonderful product! A+

good stuff! when my nails get too long, it tends to split at the tip..i feel this product keeps it strong...polish lasts 4 days with no chip

this stuff is epic! I now have to cut my nails back! It makes my nails look thicker and very smooth! The pink tint lends to a really healthy shine when dry,,I will never be without this,,ever!

This is my favorite base coat. It adds some thickness and hardness to my nails, but more importantly, it drastically improves my polish wear. It never peels off in sheets, like other base coats I've tried. I'll be buying a lot more of this in the future!

I love this! I use it as a base coat and it fills in ridges perfectly. Great as a top coat , too! I bought the one called "protect". It dries really fast too...it's thick and shiny on it's own...on bare nails. Instantly strengthens natural nails! It does allow your nails flexibility. This was $7.00 -ish at Sally Beauty Supply with a discount membership card. (which is $5.00 a yr...but you get a five dollar coupon off your next purchase of $25.00 or more) To me $7.00 is a lot to spend on a nail hardener...but this truly does what it says...for a change. I've tried a lot of hardeners and nothing else comes close to this one.