If you have PCOS and your hair has started thinning, you are not imagining it. And you are certainly not alone.
Polycystic ovary syndrome affects between 5% and 10% of women of reproductive age, and up to 30% of those women experience noticeable hair loss (Journal of Clinical Endocrinology & Metabolism, 2019). It is one of the most distressing symptoms of the condition, yet it rarely gets the attention it deserves.
The frustrating part? The same hormonal imbalance that thins your scalp hair can simultaneously cause unwanted hair to grow on your face and body. It feels unfair, and it is.
The encouraging news is that PCOS hair loss is treatable, especially when you understand what is causing it and take the right approach.
What Is PCOS?
Polycystic ovary syndrome is a hormonal condition that affects how the ovaries work. Despite the name, not everyone with PCOS has cysts on their ovaries. The condition is actually defined by a combination of symptoms including irregular periods, excess androgen hormones, and sometimes polycystic ovaries visible on an ultrasound.
PCOS can affect many aspects of health, including weight, skin, mood, fertility, and yes, hair. Both the hair on your head (which may thin) and the hair on your face and body (which may increase).
Why Does PCOS Cause Hair Loss?
The main culprit is hormones, specifically androgens.
Women with PCOS often produce higher levels of androgens (sometimes called “male hormones,” though all women have them in smaller amounts). These include testosterone and its more potent form, DHT (dihydrotestosterone).
Here is what happens:
- Testosterone converts to DHT. An enzyme called 5-alpha reductase converts testosterone into DHT. Women with PCOS often have higher levels of both testosterone and this enzyme, meaning more DHT gets produced.
- DHT attacks hair follicles. DHT binds to androgen receptors on your scalp hair follicles. Over time, this causes the follicles to shrink (a process called miniaturisation). Each hair growth cycle produces a thinner, shorter, weaker strand until eventually the follicle stops producing visible hair altogether.
- The pattern is distinct. Unlike male pattern baldness, which often starts with a receding hairline, PCOS hair loss typically shows as diffuse thinning along the crown and parting. Your hairline usually stays intact, but you may notice a widening part, reduced volume, and more scalp showing through.
DHT has around five times the potency of testosterone, which explains why it can have such a significant effect on your hair.
Other Factors That Make It Worse
Hormones are the main driver, but several other factors common in PCOS can compound the problem:
Insulin resistance
Around 70% of women with PCOS have some degree of insulin resistance (National Institutes of Health). High insulin levels stimulate the ovaries to produce even more androgens, creating a cycle that worsens hair loss. Insulin also reduces sex hormone binding globulin (SHBG), which normally keeps testosterone bound and inactive. With less SHBG, more free testosterone is available to convert into DHT.
Nutritional deficiencies
PCOS is often associated with lower levels of iron, vitamin D, and B12, all of which play important roles in healthy hair growth. If you are already dealing with hormonal hair loss, nutritional gaps can make things noticeably worse.
Low progesterone
Progesterone can help lower DHT production, but women with PCOS often have low progesterone levels due to irregular or absent ovulation. This removes another natural brake on DHT.
Chronic inflammation
Low-grade inflammation, common in PCOS, can make hair follicles more sensitive to androgens, amplifying the effects of DHT.
Stress
PCOS itself can be stressful to live with, and chronic stress can trigger or worsen hair shedding through a separate mechanism (telogen effluvium), compounding the hormonal thinning.
What Does PCOS Hair Loss Look Like?
PCOS hair loss follows a pattern known as female pattern hair loss or androgenetic alopecia:
- Widening parting: Often the first sign, where the central part appears wider than before
- Thinning at the crown: Reduced density at the top of the head
- Diffuse thinning: Overall reduction in volume rather than distinct bald patches
- Preserved hairline: Unlike male pattern baldness, the frontal hairline usually stays intact
- Finer hair texture: Individual strands become thinner and weaker over time
- Increased shedding: More hair in your brush, shower drain, or on your pillow
At the same time, you might notice increased hair growth on your face, chest, or back (a symptom called hirsutism). This affects a significant proportion of women with PCOS due to the same androgen excess.
Can PCOS Hair Loss Be Reversed?
This depends on how early you catch it and how you approach treatment.
Hair follicles that have been miniaturised but are still producing some hair (even if it is fine and thin) can often be strengthened and revived. Follicles that have been inactive for many years are harder to bring back.
The key is acting early. The longer you wait, the more follicles may reach a point where they cannot be recovered without surgical intervention.
With the right combination of hormonal management, supportive treatments, and lifestyle changes, many women see meaningful improvement in their hair density and quality.
What Actually Helps?
PCOS hair loss requires a multi-pronged approach. Treating the hair alone without addressing the underlying hormonal imbalance often produces limited results.
1. Address the Hormonal Root Cause
Working with your GP or an endocrinologist to manage your PCOS is an important first step. This might include:
Combined oral contraceptives: Certain birth control pills (particularly those containing anti-androgenic progestins like drospirenone) can reduce ovarian androgen production and lower the amount of DHT affecting your follicles.
Anti-androgen medications: Spironolactone is sometimes prescribed off-label to block DHT at the follicle level. However, it is not suitable for women who are pregnant or planning to become pregnant.
Insulin-sensitising medications: If insulin resistance is a factor, medications like metformin can help improve insulin sensitivity, which in turn may reduce androgen production.
These are prescription treatments that require medical supervision, so discuss them with your doctor.
2. Support Your Hair Directly
While you work on the hormonal side, treatments that support your hair follicles can help maximise regrowth.
PRP Therapy
PRP (platelet-rich plasma) uses concentrated growth factors from your own blood to stimulate hair follicles. It improves blood flow to the scalp, reduces inflammation, and creates a healthier environment for hair to grow.
For women with PCOS, PRP can be particularly valuable because it works directly on the follicles without affecting your hormones. It supports and strengthens the follicles you still have, helping them produce thicker, healthier hair.
At Hair Loss Studios, PRP is our core treatment. Many of our female clients with hormonal hair loss find it makes a real difference, especially when combined with addressing the underlying PCOS.
Minoxidil
Minoxidil is a topical treatment that can help extend the growth phase of hair and stimulate follicles. It is available over the counter and can be used alongside other treatments. However, it requires daily application and results reverse if you stop using it.
LED Light Therapy
Low-level light therapy stimulates cellular activity in hair follicles and can support scalp health. It works well as a complement to other treatments.
3. Check for Nutritional Deficiencies
Given how common deficiencies are in PCOS, getting your levels checked is worthwhile. Blood testing can identify whether you are low in:
- Iron and ferritin: Essential for oxygen delivery to follicles
- Vitamin D: Plays a role in follicle health
- B12: Supports red blood cell production and hair growth
- Zinc: Important for hair tissue repair
If deficiencies are found, targeted supplementation can support your hair alongside other treatments.
4. Lifestyle Factors That Help
Manage insulin resistance
Reducing refined carbohydrates and sugar, eating more protein and fibre, and incorporating regular physical activity can all help improve insulin sensitivity. Better insulin control means lower androgen production.
Reduce inflammation
Anti-inflammatory foods (oily fish, leafy greens, berries, nuts) and reducing processed foods can help lower the chronic inflammation associated with PCOS.
Manage stress
Chronic stress can worsen both PCOS symptoms and hair loss. Finding ways to reduce stress, even small ones, supports your overall health and your hair.
What About Natural DHT Blockers?
Some natural ingredients are thought to have mild DHT-blocking properties, including saw palmetto, pumpkin seed oil, and green tea extract. While the evidence is less robust than for prescription treatments, some women find them helpful as part of a broader approach.
For more on this topic, our guide to DHT blockers covers both natural and medical options in detail.
How Long Does It Take to See Results?
Hair grows slowly (about 1 centimetre per month), so patience is essential.
With hormonal management: It can take 3 to 6 months to see changes, as hormone levels stabilise and the hair growth cycle adjusts.
With PRP: Most women notice reduced shedding within a few weeks, with visible improvement in density and thickness around 3 to 6 months. Optimal results typically develop over 6 to 12 months with continued sessions.
With minoxidil: Results usually become visible around 3 to 6 months of consistent use.
The most important thing is consistency. PCOS is a chronic condition, and managing its effects on your hair requires ongoing attention rather than a one-time fix.
Will My Hair Grow Back Fully?
Honest answer: it depends.
If you catch the thinning early and address both the hormonal cause and the hair loss itself, significant improvement is possible. Many women regain noticeable density and thickness.
If thinning has been happening for many years and follicles have been inactive for a long time, some may not recover. In these cases, treatments can still help you keep and strengthen the hair you have, even if full restoration is not possible.
The earlier you act, the more options you have and the better the likely outcome.
FAQs
Does PCOS cause hair loss?
Yes. PCOS can cause a type of hair loss called androgenetic alopecia (female pattern hair loss). It happens because elevated androgen hormones, particularly DHT, cause hair follicles on the scalp to shrink over time, producing thinner and weaker hair.
What does PCOS hair loss look like?
PCOS hair loss typically appears as diffuse thinning at the crown and along the parting, with overall reduced volume. Unlike male pattern baldness, the hairline usually stays intact. You may also notice increased hair shedding.
Can PCOS hair loss be reversed?
It can often be improved, especially if caught early. Hair follicles that are still active can be strengthened with the right treatment. However, follicles that have been inactive for many years may not recover fully without surgical options.
What is the best treatment for PCOS hair loss?
The most effective approach combines hormonal management (addressing the underlying PCOS) with treatments that support the hair directly, such as PRP therapy or minoxidil. Addressing nutritional deficiencies and lifestyle factors also helps.
Does PRP work for PCOS hair loss?
Yes. PRP delivers growth factors directly to your scalp, improving follicle health and stimulating thicker hair growth. It works on the hair itself without affecting your hormones, making it a good complement to hormonal treatments.
Should I get my hormones tested?
If you suspect PCOS is causing your hair loss, hormone testing can confirm elevated androgens and help guide treatment. Your GP can arrange tests for testosterone, DHEA-S, and other relevant markers.
Why am I losing hair on my head but growing it on my face?
This is a frustrating paradox of PCOS. Androgens affect hair follicles differently depending on their location. On the scalp, they cause follicles to shrink. On the face and body, they can stimulate hair growth. Both symptoms stem from the same hormonal imbalance.
Can losing weight help with PCOS hair loss?
For women with insulin resistance, weight loss can improve insulin sensitivity, which may reduce androgen production and slow hair loss. However, it is important to lose weight gradually. Rapid weight loss can actually trigger temporary hair shedding.
You Do Not Have to Navigate This Alone
PCOS hair loss can feel isolating, especially when it is not talked about openly. But it is more common than you might think, and there are real options that can help.
At Hair Loss Studios, we see many women dealing with hormonal hair loss. We can assess your hair, discuss what might be contributing to your thinning, and recommend the approach most likely to help your situation.
Sources
- The Multidisciplinary Androgen Excess and PCOS Committee. “Female Pattern Hair Loss and Androgen Excess.” Journal of Clinical Endocrinology & Metabolism, 2019. https://academic.oup.com/jcem/article/104/7/2875/5342938
- National Institutes of Health. “Polycystic Ovary Syndrome (PCOS).” https://www.nichd.nih.gov/health/topics/pcos
- British Association of Dermatologists. “Female Pattern Hair Loss.”
Medical Disclaimer
This article is for informational purposes only. PCOS is a complex condition that benefits from proper diagnosis and medical management. If you suspect you have PCOS or are experiencing hair loss, we recommend consulting a healthcare professional for appropriate testing and treatment guidance.