Extra-Strong Fortifying Hardener

Biovisol Extra-Strong Fortifying Hardener fortifies and hardens your nails.

Active substances

  • Hexanal(1): powerful hardening agent that significantly improves the condition of the nail.
  • Transparent nitrocellulose: brings sparkle and shine to the nail


  • Very short drying time
  • Long-lasting hold
  • Dermatologically tested

Tested, proven results

  • For 80% of users, the nail was harder. (2)
  • For 87%, the nail was protected.
  • For 70%, nail breakage was reduced.


  • As treatment: apply one or two layers twice per week.
  • As base coat: apply a layer under the coloured nail varnish.

Available in pharmacies and where personal care & health products are sold.

(1) Aldehyde patented and clinically tested over 4 weeks of regular
(2) Clinical study in 30 volunteers

We use cookies to provide the services and features offered on our site and to improve the experience of our users. Cookies are data that are downloaded or stored on your computer or any other device. By clicking on "I accept", you accept the use of cookies. You can always disable them later. If you delete or disable our cookies, you may encounter interruptions or problems accessing the site. By continuing your browsing, you accept the deposit of third-party cookies intended to provide you with videos, sharing buttons, uploads of content from social platforms We use cookies to enable us to better understand how the site is used. By continuing to use this site, you agree to this policy. Read More