I'm sorry if this has been asked before but I was wondering if the birsa smoothing gel can be used on it's own underneath shellac? I don't do gels or acrylics just shellac, manis & pedis so I've no idea in this area. Is it just painted on & cured or is it sculpted in some way. Pardon my ignorance😀I have just seen a lot of you guys mentioning that you put it underneath shellac to improve wearability.