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That would depend on whether you're a man or woman. For women hormonal changes are common the mid-thirties and this is amongst the commonest triggers for acne. There is also another type of acne called 'Adult Onset Acne' and this is seen in both men and women. This has no well defined cause but recent location change to a more polluted city, make-up use, comedogenic personal care products, dietary factors and oral medications can all be responsible.
Please note that the information I ha ...
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