ACIDS

A great way to tackle congestion and counteract dullness, acids dissolve all the 'glue' that binds pore-clogging cells to skin's surface - promoting radiance while fading scars and boosting turnover to keep things looking plump and dewy. With three camps to flit between - AHAs (to chemically exfoliate), BHAs (to purge your pores) and PHAs (to fight against cell-damaging free radicals) - acids are the BFF your beauty wardrobe's waiting for; just allow skin to build up its tolerance gradually - introduce an acid toner once or twice a week before upgrading to a super-charged revitalising 'peel'. Want some pointers? Read our top tips from New York's go-to guru, { Dr. Dennis Gross}.