Fall is upon us. For many, this means sniffling, sneezing, headaches, and itchy eyes. Some people who are sensitive to hay fever and seasonal allergies may notice that they are affected when mixing their henna for hair, while it is on their head, or after it is rinsed out. This is far from serious, and easy to fix.
In cases of itching, sneezing, headache and other mild allergy symptoms, henna itself is rarely the primary culprit. Allergies to henna itself are extremely rare. Rather, during times when histamine levels in the body are already high (spring, fall, or whenever you normally get seasonal allergies), the body can confuse plant dye powders with pollen or other actual allergens. As a result, some may notice an itchy scalp, headache, or other discomfort while dyeing their hair with henna, indigo, and/or cassia. Most of the time, this is easily ameliorated with an over-the-counter oral antihistamine.