Some of the reasons why we color our hair ,because we want to enhance our haircolor,change our haircolor or cover gray. we must give a hair consultation before a haircolor is given. A patch test determine whether you have any allergies or sensitivities to the color mixture. Another name for the patch test is a predisposition test. A patch test take 24 to 48 hours prior to application of the haircolor . The best place to apply the tint fore the patch test is behind the ear or onide of the elbow.
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