Perform patch/predisposition test to determine sensitivity to color.
Performance should include
- identifying two areas where the patch/predisposition test can be done
- doing patch/predisposition test 24 to 48 hours before service to determine sensitivity to color
- identifying allergic reaction.
Process/Skill Questions:
- Which hair coloring categories require a patch/predisposition test?
- What are the signs of an allergic reaction?