Do you love having flawless nails, but are you tired of always having to do daily touch-ups? You can say goodbye to this by relying on semi-permanent varnishes. This kind of varnish spares you the management of unsightly scales on your nails after only 3 days of application. However, if you choose this kind of varnish, you must have a special lamp. The UV lamp for permanent varnish: what is i...