![Varnish Hardener 10 ML - MazenOnline](http://mazenonline.com/cdn/shop/files/biovisolhardner.webp?v=1686307271)
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Description
xBiovisol Extra-Strong Fortifying Hardener strengthens and stiffens nails. It is devoid of formaldehyde and includes Hexanal, a formidable hardening ingredient, as well as transparent nitrocellulose that provides luster and shine to the nail.