Hair Loss and Hair Transplant Guides

Start with the question most relevant to you. These guides provide general information and do not replace individual diagnosis or treatment.

Causes and testing

• Can low iron cause hair loss?
• Hair loss after weight loss
• Do Wegovy, Ozempic, and Mounjaro cause hair loss?
• Does wearing a hat cause hair loss?

Hair-loss medicines

• Finasteride vs dutasteride: 2026 evidence
• Do finasteride and dutasteride affect libido or erections?
• Low-dose oral minoxidil guide

Understanding hair transplantation

• What is a hair transplant?
• Can body hair be used for a hair transplant?
• Hair transplant failure, side effects, and revision

Care after a hair transplant

• Do you need hair-loss medication after a hair transplant?
• Exercise after a hair transplant
• Pimples after a hair transplant
• When can you wear a helmet after a hair transplant?

Limited or emerging evidence

• Does PRP work for hair loss?
• Does rosemary oil help hair growth?
• Is exosome therapy effective for hair loss?
• How is Absci's ABS-201 different from existing drugs?

Seek dermatologic evaluation for sudden, patchy, painful, scarring, or rapidly worsening hair loss.