Some Bosley hair products can have side effects such as chills, cold sweats and itching, according to Drugs.com. Bosley hair products that have possible side effects include Propecia and Bosley Professional Strength for Men and Women.
Propecia is available by prescription only and inhibits the formation of DHT, a key factor in hair loss, notes Bosley. The drug slows the thinning of hair and is targeted for those who are in the early stages of hair loss. It is also FDA-approved and has been shown to slow hair loss in men. However, the active ingredient in the drug, finasteride, may cause side effects such as chills, cold sweats, confusion, dizziness and lightheadedness, states Drugs.com. The drug can also cause less common symptoms such as bloating, breast enlargement, hives, itchy skin and weight gain or loss.
Bosley Professional Strength for Men and Women are two similar hair products that contain minoxidil, a topical ingredient approved by the FDA to help with hair loss, explains Bosley. Minoxidil, when applied topically, can cause side effects such as itchy skin or skin rash that need to be reported to a health professional. Rarely, the drug can cause acne, burning of the scalp, increased hair loss, swelling of the face, blurred vision, chest pain, fainting and headache.