Hair Changes During Perimenopause: Thinning, Texture, and What Helps

Finding more hair in your brush, noticing your ponytail feels thinner, or seeing your parting widen are experiences many women have during perimenopause. Hair changes are a real and well-documented consequence of shifting hormones, though they are not talked about as often as symptoms like hot flashes or mood changes.

Why Hair Changes During Perimenopause

Hair growth is influenced by several hormones, and the shifts that occur during perimenopause affect the hair growth cycle in measurable ways.

Estrogen and hair growth Estrogen helps keep hair in its growth phase (called the anagen phase) for longer. As estrogen declines during perimenopause, the growth phase shortens. Hair spends less time growing and more time in the resting and shedding phases. The result is thinner, finer hair overall. Research published in the British Journal of Dermatology has confirmed the role of estrogen receptors in maintaining hair follicle function (Ohnemus et al., 2006).

The androgen effect As estrogen drops, the relative influence of androgens (including testosterone and its derivative DHT) increases. Women produce small amounts of testosterone throughout their lives, but when estrogen is no longer counterbalancing it, the effects become more noticeable. DHT can shrink hair follicles on the scalp while sometimes causing unwanted hair growth on the face, a pattern that frustrates many women during this transition.

A study in the Journal of the American Academy of Dermatology found that female pattern hair loss increases significantly during and after the menopause transition, affecting approximately 40 percent of women by age 50 (Famenini and Goh, 2014).

Thyroid connection Thyroid dysfunction becomes more common during midlife and can cause hair loss that mimics or adds to hormonal thinning. If your hair loss seems sudden or severe, it is worth asking your doctor to check your thyroid function along with your iron and ferritin levels.

What You Might Notice

Hair changes during perimenopause can take several forms:

Overall thinning: hair becomes finer and less dense across the whole scalp, particularly at the crown and along the part line
Increased shedding: you notice more hair on your pillow, in the shower drain, or in your hairbrush. Some daily shedding is normal (50 to 100 hairs per day), but perimenopause can push this higher
Texture changes: hair may become drier, more brittle, or lose its previous curl or wave pattern
Slower growth: hair seems to take longer to grow and may not reach the lengths it used to
Changes in other body hair: pubic and underarm hair may thin, while facial hair (chin, upper lip) may increase due to the shifting estrogen-to-androgen ratio

These changes typically happen gradually over months and years, not overnight. If you experience sudden, patchy hair loss (bald spots), that is a different pattern and warrants prompt medical evaluation.

What the Research Says About Treatment

Minoxidil

Minoxidil (marketed as Rogaine or Regaine) is the most studied treatment for female hair loss. It is applied topically to the scalp and works by increasing blood flow to hair follicles and extending the growth phase.

A meta-analysis published in the Journal of the American Academy of Dermatology found that 2% topical minoxidil produced significantly greater hair regrowth compared to placebo in women with pattern hair loss. A 5% formulation showed additional benefit in some studies, though with a higher risk of facial hair growth as a side effect (Blume-Peytavi et al., 2011).

Results take time. Most women need to use minoxidil for at least 4 to 6 months before seeing noticeable improvement, and the treatment needs to continue to maintain results.

Hormone Therapy

Since estrogen decline is a driver of perimenopausal hair thinning, hormone replacement therapy can help. A study in Maturitas found that women using HRT had better hair density and thickness than those who were not, though HRT is not typically prescribed solely for hair loss.

If you are already considering HRT for other symptoms like hot flashes, sleep problems, or mood changes, improved hair quality may be an additional benefit worth discussing with your doctor.

Anti-Androgen Treatments

For women where the androgen component is significant, medications like spironolactone can help by blocking the effects of DHT on hair follicles. A systematic review in the British Journal of Dermatology found that spironolactone showed benefit for female pattern hair loss, particularly when combined with minoxidil.

These medications require a prescription and are not suitable during pregnancy, so contraception is important if you are still having periods.

Nutritional Factors

Several nutrients play a role in hair health:

Iron: ferritin levels below 40 micrograms per litre have been associated with increased hair shedding in several studies. If your periods are heavy (which is common during perimenopause), your iron stores may be low
Vitamin D: deficiency is linked to hair loss and is common in midlife women. A study in Skin Pharmacology and Physiology found an association between low vitamin D and female pattern hair loss
Protein: hair is made of keratin, a protein. Adequate dietary protein supports hair growth. This ties into the broader role of nutrition during perimenopause
Biotin: widely marketed for hair growth, but evidence is limited to cases of actual biotin deficiency, which is uncommon
Zinc and B vitamins: play supporting roles in hair follicle function

Before taking supplements, it is worth getting blood tests to identify any actual deficiencies rather than supplementing blindly. Our guide to perimenopause supplements covers the evidence for common options.

What You Can Do Day to Day

Be gentle with your hair

Avoid tight hairstyles that pull on the hairline (traction alopecia)
Reduce heat styling or use lower temperature settings
Switch to a wide-tooth comb or a brush designed for thinning hair
Avoid harsh chemical treatments like bleaching or perming when hair is already fragile

Choose the right products

Volumising shampoos can make fine hair appear thicker
Avoid heavy conditioners on the scalp, as they can weigh thin hair down
Leave-in treatments with proteins can temporarily strengthen hair shafts

Consider your overall health Hair health reflects your general wellbeing. The same strategies that help manage other perimenopause symptoms also support hair:

Managing stress (chronic stress contributes to a condition called telogen effluvium, where hair shifts prematurely into the shedding phase)
Getting enough sleep
Regular exercise to support circulation
A balanced diet rich in protein, iron, and omega-3 fatty acids

When to See Your Doctor

Consult your healthcare provider if:

Hair loss is sudden or patchy
You notice bald spots rather than general thinning
Hair loss is accompanied by other symptoms like extreme fatigue, weight changes, or changes in your skin
You suspect a thyroid problem
Over-the-counter treatments have not helped after 6 months

Your doctor can check for underlying causes (thyroid issues, iron deficiency, other hormonal imbalances) and discuss treatment options specific to your situation.

Sources:

Ohnemus, U. et al. (2006). The hair follicle as an estrogen target and source. Endocrine Reviews, 27(6), 677-706
Famenini, S. and Goh, C. (2014). Evidence for supplemental treatments in androgenetic alopecia. Journal of Drugs in Dermatology, 13(7), 809-812
Blume-Peytavi, U. et al. (2011). A randomized, single-blind trial of 5% minoxidil foam once daily versus 2% minoxidil solution twice daily in the treatment of androgenetic alopecia in women. Journal of the American Academy of Dermatology, 65(6), 1126-1134
Kantor, J. et al. (2003). Decreased serum ferritin is associated with alopecia in women. Journal of Investigative Dermatology, 121(5), 985-988
Goluch-Koniuszy, Z.S. (2016). Nutrition of women with hair loss problem during the period of menopause. Menopause Review, 15(1), 56-61