Scar remedies' effectiveness not so clear

Products for erasing old scars or preventing new ones abound, but few studies address whether they really work. The key to minimizing scarring, doctors say, is keeping a wound moist and covered.Time may heal all wounds, but the scars that remain can be unsightly, itchy, stiff and painful. Pharmacy aisles beckon with "clinically proven, doctor-recommended" scar products, and the Internet teems with anecdotes of different creams and elixirs that supposedly erase old scars or prevent new ones from forming.

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