I started the ZO Medical Obagi skin care regime in preparation for the ZO Medical Obagi Blue Peel for treatment of stubborn melasma. I am liking the results so far (4 weeks), but I just found out the cost of the peel is near $7000, at the Obagi Center in Newport..... that seems crazy for a peel? I believe it is a TCA %10, and other combination of chemicals? Is there other options of peels that would produce similar result at a more reasonable price??