Hi, For Gelish You just need a 36 watt lamp, this will cure your gelish perfectly, providing it is from a reputable supplier.
60 seconds for your base, and 2 minutes per colour coat, 2 minutes top coat cure
You also have the option of using an LED light for a faster cure which is VERY cool should you wish to, its nice and lightweight and smaller than you would think too, so good if you are mobile.
Which will give you a 10 second cure for your base, and 30 seconds per coat of colour and 30 seconds also for your top coat.
But yes, the LED is OPTIONAL Most people are happy working with the uv light,
And for Shellac you would need to purchase the lamp from sweet squared designed specifically to cure shellac and other cnd uv cured products.
Its pretty cool too... I am sure someone from cnd will be able to give you further information on their lamp if required though
:hug: