Garnier Renew Clinical Dark Spot Corrector Overview Hyperpigmentation  can be caused by lots of things.  Pregnancy, birth control, sun damage, and acne are a few that come to mind.  Lately, the market has been flooded with products that attempt to correct this problem.  Garnier Renew Clinical Dark Spot Corrector is the latest offering by Garnier to address skin discoloration.  The…