NIOXIN® products may be used during chemotherapy. Hair loss (alopecia) is a common side effect of chemotherapy treatments. Not all chemotherapy drugs cause hair loss and some drugs only cause thinning of the hair or cause it to become brittle. NIOXIN® products are safe for use during chemotherapy treatments and help promote a healthy scalp environment. Common Sense Note: Always consult with your doctor before using any product when undergoing medical treatments.