Hair Growth

This section covers hair thinning and hair growth products. You will find reviews, best-of guides and explainers on common causes of hair loss.

We check ingredient doses against human research and note that supplements tend to help mainly when a nutrient is low. We flag very high biotin doses, side effects and refund policies.

Hair loss can be linked to thyroid issues, iron levels or hormones. See your doctor for testing, and ask before use if you are pregnant.

What should you check before buying a hair growth supplement?

See a doctor or dermatologist to find the cause of hair loss first. Hair loss can come from genetics, stress, thyroid problems, low iron, some medicines, or scalp conditions. Treatment depends on the cause. The American Academy of Dermatology notes that many types of hair loss can be treated once the cause is known. Supplements help mainly when a deficiency exists.

Source: Hair Loss, American Academy of Dermatology