HairLoss99 helps you understand hair loss and compare your options. It is not a substitute for a doctor. Nothing on this site, including our AI answers, quiz results and product scores, is a diagnosis or a prescription.
Hair loss often has more than one cause. Some causes, such as thyroid disease, anaemia, PCOS or an autoimmune condition, need proper tests and treatment. A product can't fix them.
See a doctor soon if you have
See a doctor soon if you have: round bald patches that appear suddenly · hair coming out in clumps · redness, pain, pus, scaling or scarring on the scalp · hair loss with fever, weight loss, irregular periods, acne or new facial hair · eyebrow or eyelash loss · hair loss in a child.
See a dermatologist (not urgently) if
- You've been losing more hair than usual for over 3 months.
- Your parting is widening, your hairline is receding or your crown is thinning.
- You've tried a non-prescription product for 4–6 months without change.
- You're thinking about finasteride, dutasteride, oral minoxidil, spironolactone, PRP or a transplant.
About medicines
- Prescription medicines (for example finasteride, dutasteride, oral minoxidil, spironolactone) must be prescribed by a registered doctor who knows your history. We never link to buying them.
- Pregnant, trying to conceive or breastfeeding? Many hair loss medicines are unsafe. Talk to your doctor before using anything new, including topical products.
- Tell your doctor about every medicine and supplement you take. Some interact, and some (for example high-dose biotin) can affect blood test results.
About our AI answers
Our AI answers only from pages our medical reviewers have checked, and shows you the sources. It can still be wrong or incomplete. If an answer doesn't match what your doctor told you, follow your doctor.
About product scores and prices
Scores reflect our published methodology. Prices change often. Always check the final price and the pack's ingredient list before you buy.
Emergencies
If you have chest pain, fainting, a racing heartbeat, severe dizziness or swelling of the face or legs after starting any hair medicine, stop it and get medical help immediately. Call 112 in an emergency.
Discussion
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