There's scepticism over our decreasing acne rates. 

New research in the British Journal of Dermatology has singled out New Zealand as the only country with decreasing rates, but only by a small amount. 

Germany had the highest rates of reported acne, while the rate in the UK had increased to almost 15% from 1990. 

Dermatologist Louise Reiche told Heather du Plessis-Allan the research is based on people who went to doctors for it. 

She wonders if it's down to not having as much acne, or maybe people aren't as bothered to see their doctor about it. 

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