thx for the responses...the sa at prescriptives did my custom blend and in the bottle it's appears a bit lighter than what I would have picked but once it's on my face and blended it does match pretty close to perfect. i've never tried primer though - i might give that a thought. I guess I got the oxidation question from all the reviews on studiofix - i tried it twice and by midday it was a total different color.

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Ms. T-Be Breezy~