Ever wonder why after five coats of mascara your lashes look clumpy? Or worse - catch a glimpse of yourself in the mirror three hours into your day and realise your mascara has slid halfway down your cheek?

While it sometimes seems like the simplest step our makeup routine, mascara doesn’t always apply as smoothly as it should.

Read on to find out the top three reasons why, and you’ll be back on track to full, flawless lashes in no time.