Review (2/5): Solids don't cure.
So, the glittery ones work just fine, they fully cure and are decently durable. They have a shiny clean finish and you can spread them out in patterns to give a cool effect. But the solid colors suck. They never fully cure, I've held them under the light up to 4 times the usual cure takes. And that's upside-down and right-side-up. No angle with the light on your finger will fully cure the layer of gel close to the nail. And your nails will pop off and leave you with sticky smears of uncured gel on your nails. The only thing that made this purchase not awful, was the glittery gels. The light penetrates easily and they are sturdy nails.
The best I can suggest for the solids, is using paper nail forms and curing thin layer by thin layer. And even then I don't have high hopes of it fully curing.