Should I perform an allergy test?

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This is not attended as a replacement for any medical consulttaion. We recommend an allergy test (Patch test) 48-72 hours before the first application as well as after long periods without tinting.
Instructions: Mix 1 cm of Biosmetics Intensive eyelash & eyebrow tint with 5 drops of Biosmetics Intensive Oxidant liquid or 8-10 drops of Biosmetics Intensive Developer cream. Apply a small amount to a small area on the inner bend of the elbow or behind the ear. Allow to dry and leave uncovered for 48-72 hours, then clean thoroughly. If any irritation occurs during this time don`t do the treatment.