I am very happy with the purchase of this UV lamp for drying gel Polish (shellac). Use once a week for a year and a half, bought on Aliexpress more expensive than it is in the same store now (even with the discounts).
Powerful lamp - 36W to drier base coat just ten seconds, the colored layers and the top land at one minute. In this mode, the shellac freezes well, can be removed without problems (photo at bottom). If dry longer (two minutes, for example), then the varnish for a very long time get soaked and difficult to be removed several times.