What are some side effects that might occur?

Ciclopirox (an active ingredient in the shampoo) can cause itching, redness, or dry skin.

Less commonly, it can cause the following: ventricular tachycardia (irregularly fast heart rate), nail discoloration, alopecia (hair loss or thinning), hair discoloration, contact dermatitis (skin inflammation from contact with a substance), acneiform rash, or headache. 

This information is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment, and should never be relied upon for specific medical advice. If you have any questions or concerns, please talk to your healthcare provider.