ProStrong Advanced Fluoride Strengthener Duo

ProStrong Advanced Fluoride Strengthener Duo
product thumbnail

What is it: A highly concentrated fluoride treatment that helps harden nails.

Who is it for: Anyone who wants stronger nails.

Why is it different: This set includes two bottles of the fluoride strengthener.

How do I use it: Apply it on bare nails or polished nails. It will bond with the natural calcium in your nails to harden them.

From ProStrong(R) Nail Care.

  • Includes two 0.5 fl oz bottles of ProAdvanced Fluoride Nail Strengthener
  • Cannot ship to AK, HI, VI, PR, Guam

Delivery Date Estimate

Reviews & Community QA

ProStrong Advanced Fluoride Strengthener Duo is rated 4.3 out of 5 by 43.
Rated 1 out of 5 by from Didn't work at ALL I have had very thin flimsy nails my whole life and try many new products. Like all the others this did nothing even after 2 months of very consistent use. Too late to return unfortunately.
Date published: 2016-10-14
Rated 5 out of 5 by from Love IT!!! I love this product and will continue to use it as I have softer nails and they are now hard and growing quickly. This is an excellent product and so easy to apply!
Date published: 2015-08-08
Rated 5 out of 5 by from Unbelievable Results I very seldom write reviews because so few items impress me but this product is amazing. I am 63 and my nails were peeling and cracking and nothing was helping. I found a bottle of this that I had purchased a few years early and decided to give it a try. I took my bottle to work and several times a day I would put on my nails. It doesn't have an offensive smell so nobody was bothered by it. After around 6 weeks I saw a huge improvement in my nails. They are stronger and not peeling or cracking. For those of you who have had bad luck with this product I would recommend using it at least twice a day, maybe more, and give it some time.
Date published: 2014-09-24
Rated 5 out of 5 by from The Only Nail Product That Works For Me! This is THE ONLY nail strengthening product that works on my problem nails! I have the worst nails ever! They do not grow...they only split and crack...sometimes it is painful! I love this and I don't want to be without it ever again!
Date published: 2014-09-22
Rated 5 out of 5 by from You Nailed It! I had a HORRIBLE experience with gel nails that left my natural nails weak and tissue thin. I never thought I'd have healthy nails again. I tried several different products claiming to restore nails damaged by using gel nails and tips...nothing worked...until I used ProStrong products. I never had super strong nails anyway but ProStrong Floride treatment along with the Calcium treatment have strengthened my nails considerably. I'm a true believer in ProStrong and highly recommend their products. If they could help MY nails in the condition they were in, they can help yours! Please note though that I used it faithfully at least twice a day at a minimum for several weeks before I saw a dramatic change. If you can't commit to doing it long term, it may not work for you. I won't use anything else now.
Date published: 2014-06-02
Rated 5 out of 5 by from Amazing Results This product has given me Amazing results in a short period of time! I have always had weak, peeling nails. I have spent tons of money on products and nothing worked. I decided to use this the first week with no polish or nail hardener on. By the end of the week some nails had grown to the point of having a free edge extending beyond my finger tip! Shocked. The second week I used it over my Polish twice a day and I can hear my nails on my keyboard as I type. I would add this to my "desert island" make up bag!! Love it. It saved my nails.
Date published: 2014-03-10
Rated 5 out of 5 by from Awesome Product I remember seeing this product on QVC years ago but at the time I didn't need it. When I was young my nails grew very easily. After I had my children my nails became weak and would bend very easily. I remembered this product and ordered it. After two weeks I began to see a difference. I have been using this for a year and would not be without it. I use it twice a day on bare nails and over polish. For those who say it doesn't work I would give a few tips. First of all use it regularly. At least twice a day. It drys quickly so it's not an inconvenience. Second, I keep it in my purse so that I can use it at any time. It doesn't have an odor so it will not bother other people. Most importantly recognize you will always need this product. Don't use for a period of time and then stop or skip days. If you do your nails will become weak again. My nails have returned to what they were like when I was in my twenties by using this product. I am so glad I don't have to use acrylics or gels which are so damaging to the nails. I hope QVC never stops selling this product.
Date published: 2013-11-20
Rated 5 out of 5 by from Don't ever stop selling this product I have used this for many years and I never want to be without it. I could never have long nails until I used this. I love having longer nails and. it is helpful for sewing. Thank you for all the products but this one I love the best.
Date published: 2013-11-17
  • y_2017, m_6, d_25, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_43
  • loc_, sid_A312297, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_qvc

Let's Stay in Touch

* *You're signing up to receive QVC promotional email.
Connect with Us

The scoop on everything Q, from helpful tips to interesting tidbits, questions, answers, and more.

QVC is not responsible for the availability, content, security, policies, or practices of the above referenced third-party linked sites, nor liable for statements, claims, opinions, or representations contained therein. QVC's Privacy Statement does not apply to these third-party web sites.

© 1995–2017 QVC, Inc. All rights reserved. Trademark Notice

Desktop View Mobile View