Hair Loss in Women: A Dermatologist on What Actually Works

Alopecia is an umbrella term for many different diagnoses. So before anything else, you want to make sure that what you’re dealing with is female pattern hair loss, and not one of the others, because the treatment depends entirely on which type of alopecia you have.

First, rule out the other kinds

Telogen effluvium. This is a diffuse shedding that tends to happen after a trigger or a stress on the system, and it tends to resolve on its own with time. We most commonly see it postpartum, and it resolves. Right now we’re also seeing a lot of it with GLP-1 weight-loss medications. If your hair started coming out in handfuls a couple of months after a big change, that’s the pattern.

Alopecia areata. Circular patches of hair loss.

Scarring alopecias. Lichen planopilaris, frontal fibrosing alopecia, and central centrifugal cicatricial alopecia. These destroy the follicle, and time matters.

Traction alopecia. From tight styles pulling on the hair.

If you have any type of scalp rash along with your hair loss, you need to see a dermatologist to rule out these other causes. That’s not a place for a serum or a supplement.

What female pattern hair loss looks like

It looks different from men’s. Women usually keep the frontal hairline; the very front edge is spared. What happens instead is a “Christmas tree” pattern, a widening of the part that gets broader toward the front, and often some diffuse thinning over the crown. It affects the frontal and vertex areas of the scalp while sparing that most forward hairline.

The easiest self-check is your part. If it’s noticeably wider than it was in old photos, especially toward the front, that’s the pattern.

The workup

You want to make sure you’re healthy, and most women are. Hormones are frequently tested, but if you’re getting regular menstrual cycles, the chances of a significant hormone problem are pretty rare. Polycystic ovary syndrome, PCOS, now being renamed polymetabolic ovarian syndrome or PMOS, is one of the most frequent hormonal causes of hair loss, and the clues are irregular periods, acne, and hirsutism (excess facial or body hair) alongside the hair loss.

The blood work worth doing:

• ferritin
• TSH
• vitamin D
• CBC
• hormones, particularly if periods are irregular or there’s acne and hirsutism

Once you’ve been assured there are no blood-work abnormalities you can easily correct, it’s time to treat the pattern hair loss itself.

What actually works

Topical minoxidil (Rogaine). The most popular option. Use the 5%. I would not waste my time with the 2%.

Low-dose oral minoxidil. 0.625 to 2.5 mg. Whether topical or oral, you can get some shedding when you first start minoxidil. That’s typical, and it’s a good sign: it means it’s pushing out the old hairs to make room for the new, and eventually you’ll see the newer hairs coming in. Some women get increased facial hair. Rarely, people can have dizziness, fluid retention, an irregular heart rate, or fluid around the heart. Those problems are rare, but you need to know about them and stop the medication if they happen.

Spironolactone. An oral option that works on the hormonal side. Fine for premenopausal women who are not trying to conceive, with reliable contraception.

Finasteride or dutasteride. Also oral options, with a firm rule: only in postmenopausal women, and absolutely never in pregnancy or in anyone attempting pregnancy. The same applies to spironolactone: not for anyone attempting pregnancy.

Compounded topicals. Topical spironolactone and finasteride can be compounded, often with tretinoin added to increase penetration into the scalp, to help hair growth in female pattern alopecia.

PRP, PRF, or exosomes. These have some modest evidence for female pattern hair loss. They’re quite expensive. But for someone who does not want to take an oral medication and can afford the treatments, PRP injections are an option.

Laser caps. There’s some mild, low-risk evidence for these.

Supplements. Controversial. Biotin always comes up, and you should only take biotin if you’re truly deficient in it. Beyond that, biotin can distort lab tests, including thyroid tests and troponin (the heart-attack blood test), which is a real problem if you ever need those done urgently.

Give it six months, and take the ugly photo first

Hair growth takes time. Before you start any treatment, take a baseline picture with your hair wet and parted in the middle, when it looks its worst. Then take the same picture again at six months and compare. That’s how you judge whether something is working, not the mirror on a good hair day.

Try to reduce your stress where you can, because stress increases shedding. And while you wait for regrowth, there’s no shame in cosmetic help: hair-thickening fibres such as SureThik or Toppik, hair colour sprays for the scalp, hair pieces, clips, and wigs all buy you confidence while the treatment does its slow work.

The bottom line

Make sure it’s actually female pattern hair loss and not shedding, a scarring alopecia, or a scalp condition. Get the basic blood work. Then start with 5% minoxidil or a low oral dose, add a hormonal option if it fits and pregnancy is off the table, consider PRP if you’d rather avoid pills and can afford it, and give any of it six months before you judge. Keeping what you have counts as winning before regrowth ever shows up.

Comparing your options? See our guide to hair loss treatments compared, and my companion article on hair loss in men.