I accidentally tore off the label that said base/top coat on my gel polishes. Apart from the labels, everything else on the actual bottle is the exact same and there is no indication of which one is which (apart from some numbers engraved on the bottom of the bottle). How can I tell the difference between them? So far my only idea is to just trial and error swatches from each bottle with the UV lamp and see which one works most like a top/base coat. Please advise