Safety and efficacy 

The safety, efficacy, and contents of supplements cannot be trusted.

• An independent lab that analyzed beauty supplements found small quantities of lead in it. Lead is a heavy metal that's a neurotoxin in children.
• High doses of biotin can produce false lab results, increasing the chance of missed diagnosis and treatment.
• Ashwagandha has a variety of side effects, including miscarriage.
• Too much Vitamin A and E can cause hair loss.