Skin and hair | 6 min read
Female Hair Thinning: Causes and Treatments That Work
Editorial draft — clinical review pending.
Short answer: The right treatment depends on the cause. For female pattern hair loss, the most common cause of gradual thinning, topical minoxidil is the only FDA-approved medicine and the standard first treatment. Spironolactone and low-dose oral minoxidil are widely used off label. Sudden shedding often has a different cause, such as stress, illness or low iron, and may need a different approach. [1,2,3]
Key takeaways
- Gradual thinning at the part or crown is usually female pattern hair loss. [2]
- Heavy shedding 2 to 3 months after illness, surgery, childbirth or major stress is often telogen effluvium, which usually recovers. [1]
- Treatments take about 6 months to judge and must be continued to keep results. [2]
Common types of hair loss in women
Female pattern hair loss. A widening part and thinning on top, with the hairline usually intact. It runs in families and becomes more common after menopause. [2]
Telogen effluvium. Sudden diffuse shedding a few months after a trigger like illness, surgery, crash dieting, childbirth or stress.
Other causes include thyroid disease, iron deficiency, certain medicines, tight hairstyles, and autoimmune or scarring conditions that need a dermatologist. [1]
Treatments for female pattern hair loss
Topical minoxidil (2% solution or 5% foam) is FDA approved for women. Some women notice extra shedding for the first few weeks, which usually settles. Results take 6 months or more, and hair loss resumes if you stop. [2]
Spironolactone is a tablet that blocks androgen effects. It's used off label and a small randomized trial found adding it to topical minoxidil improved hair density in premenopausal women. [3] It isn't safe in pregnancy, so reliable contraception is needed for women who could conceive, and blood potassium or blood pressure may need checking.
Low-dose oral minoxidil is increasingly prescribed off label for people who can't use the topical form. Side effects can include unwanted facial or body hair, ankle swelling and dizziness, so it needs medical supervision. [1]
Other approaches include treating low iron or thyroid problems, and procedures such as platelet-rich plasma or hair transplants for some people.
Before you start any treatment
Ask:
- What type of hair loss do you think this is, and why?
- Is an exam or blood test needed first?
- Is this treatment FDA approved for this use, or off label?
- What side effects and monitoring should I expect?
- When should I expect results, and what if it doesn't work?
Mention any pregnancy plans and list all medicines and supplements, including biotin, which can interfere with some lab tests.
When to see someone in person
Get an in-person exam if hair loss is patchy, the scalp is red, scaly, itchy or painful, the hairline is receding, or you're losing eyebrow or body hair. Photos and questionnaires have limits for these patterns.
Track progress fairly
Take photos in the same light and position every 3 months. Daily mirror checks can make changes hard to see.
Frequently asked questions
What is the best treatment for female hair thinning?
For female pattern hair loss, topical minoxidil is the first-line, FDA-approved option. Others may be added depending on your situation. [2]
Does biotin help hair loss?
Only if you're deficient, which is rare. Biotin can also distort some blood test results.
Is hair loss reversible?
Telogen effluvium usually recovers. Female pattern hair loss can often be slowed or partly reversed with ongoing treatment.
Next step
Start with the pattern you've noticed. A HerScripts clinician can help work out the likely cause and the treatment that fits it. Learn about hair thinning in women.
Sources
[1] American Academy of Dermatology, Hair loss diagnosis and treatment
[2] British Association of Dermatologists, Female pattern hair loss
[3] Randomized trial of oral spironolactone for female pattern hair loss
Educational information, not personal medical advice. Care decisions require an individual clinical evaluation.