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First, there are 2 sides on the Revlon mascara, the white one as base, and then the other side to put on top, the base is supposed to enhance the volume of the lashes. But it didn't work on my lashes, maybe I didn't put enough? (My lashes are not short ones) I did make sure I cover all lashes before applying the mascara though, anyway, after applying the black mascara, apart from being clump free, I can only see small effect and not-so-volumous eyelashes. Whereas the HR mascara, although it doesn't have a base coat, the lashes are instantly thicken and lengthen. Undoubtedly there are a bit of clumps compare to Revlon, but if eyes look bigger and sharper, I guess a bit of clumps don't matter, right?
Sometimes, you really have to spend more to have good results.