Fed up with wasting money on skincare that doesn't work? The No7 Pro Derm Scan finds your perfect regime and foundation shade in 15 minutes. We tried it first

We have all become much savvier ‘skintellectual’ consumers in the past few years; we know our skin barrier from our dermis, our retinol from our niacinamide. But astonishingly three-quarters of us only use up a third of our skincare and makeup and 86 per cent say we’ve bought skincare that in fact doesn’t suit our skin, according to a new survey 2000 UK women by Boots. In the current climate, that’s something many of us can ill afford.