Short answer: you cannot scrub dihydrotestosterone (DHT) off your scalp like grease, and no shampoo permanently switches it off. What you can do is lower how much DHT builds up around the follicle, keep the scalp clean and calm, feed the hair the nutrients it needs, and, where the loss is genetic and progressing, ask a GP about the prescription options that are proven to block DHT from the inside. Done together, these steps give thinning hair the best possible environment to look fuller and hold on longer.

What is DHT and why does it affect your hair?

Dihydrotestosterone is an androgen, a hormone your body makes by converting testosterone using an enzyme called 5-alpha reductase. Everyone produces it, and it plays a normal role in the body. It only becomes a hair problem in people whose follicles are genetically sensitive to it.

In those sensitive follicles, DHT binds to receptors at the root and slowly shortens the growing (anagen) phase of the hair cycle. Over repeated cycles the follicle miniaturises: each new hair grows finer, shorter and lighter than the last, until the coverage looks visibly thinner. This is the mechanism behind androgenetic alopecia, better known as male and female pattern hair loss. It is the most common cause of gradual thinning in both men and women.

Women are not exempt. Shifting hormone levels around PCOS and menopause can make the scalp more reactive to androgens, which is why some women notice a widening part or thinner ponytail in their 40s and 50s.

Can you actually remove DHT from your scalp?

Not literally, and it helps to be honest about that up front. DHT is produced in your tissues, including the scalp, and circulates in the blood. You cannot wash it away and keep it away. What genuinely moves the needle falls into three groups, and it is worth knowing which is which before you spend money.

Read that table as a hierarchy. If your loss is clearly genetic and moving, the medical options do the heavy lifting and everything else is support. If you are earlier on, or you want to look after a scalp that is holding steady, the cosmetic and lifestyle layers are a sensible, low-risk place to start.

How do you support a DHT-prone scalp day to day?

You cannot control your genes, but you can control the daily environment your follicles live in. A calm, clean, well-fed scalp is simply a better place for hair to grow than a congested, irritated one.

Cleanse gently and regularly

Washing two to three times a week clears sebum, sweat and product build-up without stripping the scalp raw. Reach for a sulfate-free formula so you are not over-cleansing an already sensitive scalp. Ingredients like caffeine, rosemary and niacinamide are popular in growth-focused shampoos because they help the scalp feel fresh and the hair look fuller, which is a cosmetic benefit rather than a DHT cure.

Massage to wake up the scalp

A few minutes of fingertip massage while you cleanse increases local blood flow and is a pleasant, no-risk habit. Small studies suggest regular scalp massage may help hair look thicker over months, likely through improved circulation and reduced tension.

Skip the harsh stuff

Tight styles, aggressive brushing, very hot tools and heavy chemical treatments all stress hair that is already fragile. You are not trying to punish the scalp, you are trying to protect what you have while the rest of your plan works.

Grow Me® Hair Growth Shampoo

A sulfate-free daily shampoo built around caffeine, rosemary, niacinamide and biotin. It will not block DHT the way a medicine does, but it keeps a DHT-prone scalp clean and comfortable and helps hair look fuller and thicker. Vegan and UK-made.

Shop Grow Me Shampoo →

What should you eat to help balance DHT and support hair?

No plate of food will reverse genetic hair loss, and it is fair to be sceptical of any article that promises otherwise. What good nutrition does is remove the deficiencies that make hair worse and give follicles the raw materials for normal, healthy growth. A few nutrients are worth prioritising.

• Zinc: involved in hair tissue growth and repair; found in shellfish, seeds, nuts and whole grains. Low zinc is linked with more shedding.
• Protein: hair is mostly keratin, a protein, so consistently under-eating protein shows up in weaker strands.
• Omega-3 fatty acids: from oily fish, walnuts and flaxseed, they support scalp condition.
• B vitamins including biotin: contribute to the maintenance of normal hair, though a true biotin deficiency is uncommon.
• Iron: low ferritin is a common, easily missed driver of shedding, especially in women. A GP can check this with a simple blood test.

It is also worth easing off very high-sugar, heavily processed eating. The link between refined carbohydrate spikes and androgen activity is not fully settled, but a whole-food pattern is good for your hair either way.

GrowPro Hair Growth Gummies

Sugar-free vegan gummies with biotin, zinc, MSM and bamboo silica. Handy if your diet has gaps, since these nutrients contribute to the maintenance of normal hair. A supplement to a good diet, not a substitute for one, and not a treatment for a medical condition.

Shop GrowPro Gummies →

Do natural DHT blockers like saw palmetto work?

This is where honesty matters most. Saw palmetto and pumpkin seed oil are the two natural extracts most often sold as DHT blockers. Both have small studies suggesting they might modestly influence DHT or hair count, and both are generally well tolerated. But the evidence is early, the study sizes are small, and the effect, where it exists, is far weaker than prescription medicine.

So treat them as optional extras for someone who wants to try a low-risk natural route, not as a proven fix and never as a reason to delay getting genuine hair loss assessed. If you take other medicines or you are pregnant or breastfeeding, check with a pharmacist or GP first, because natural does not automatically mean risk-free.

When should you see a doctor about DHT hair loss?

Topical care and good habits are worth doing, but they are not a substitute for a diagnosis. Book an appointment if any of these apply:

• Your hair is thinning at the crown, temples or part in a recognisable pattern, and it is progressing.
• You are shedding noticeably more than usual, or you have bald patches.
• The scalp itself is itchy, sore, red or scaly.
• Hair loss came on suddenly, or alongside other symptoms like fatigue or changes in your periods.

A GP or dermatologist can confirm whether it really is androgenetic alopecia, rule out causes like telogen effluvium, thyroid issues or low iron, and talk you through the treatments that actually block DHT, chiefly finasteride and dutasteride, plus topical minoxidil for maintenance. These are prescription decisions with their own benefits and side effects, which is exactly why they should be made with a clinician rather than from a blog.

A simple, honest routine to put it together

If you want a practical starting point that carries no medical risk while you decide on next steps:

1. Cleanse 2 to 3 times a week with a gentle, sulfate-free shampoo and massage the scalp for a couple of minutes.
2. Eat for your hair: enough protein, plus zinc, iron and omega-3 rich foods, and ask your GP to check ferritin if you are shedding.
3. Protect what you have: looser styles, less heat, no harsh chemical treatments.
4. Consider a leave-on scalp serum for lower-density areas as a cosmetic support.
5. If the pattern is genetic and progressing, see a GP early about proven DHT-blocking treatment. The sooner a shrinking follicle gets help, the more there is to save.

Grow More® Leave-In Density Serum

An overnight leave-on scalp elixir with caffeine, rosemary, niacinamide and biotin, made for lower-density areas like the crown and part. A cosmetic support that helps hair look denser while you follow the rest of your plan.

Shop Grow More Elixir →

Watermans is a UK-made, vegan and cruelty-free hair care brand with over 5 million bottles sold since 2012. Our products are designed to support the look and health of your hair cosmetically. They are not medicines and do not treat, cure or reverse hair loss.

Frequently asked questions

Can you really remove DHT from your scalp?

No. DHT is a hormone produced in your body, so it cannot be permanently washed off the scalp. You can reduce its build-up around the follicle, keep the scalp healthy, and, with a prescription, lower DHT from the inside. Think management, not removal.

How long before I see results from a DHT-focused routine?

Hair grows slowly, so give any approach at least 3 to 6 months of consistent use before judging it. Prescription treatments and cosmetic support both work over months, not days.

Do DHT-blocker shampoos work?

Shampoos support the scalp and can make hair look fuller and cleaner, which is a cosmetic benefit. They are not a substitute for medical DHT blockers like finasteride. Use them as part of a routine, not as a standalone cure.

Can women have DHT-related hair loss?

Yes. Female pattern hair loss can involve androgen sensitivity, and conditions like PCOS or the menopause can increase it. Women should see a GP for assessment, as the treatment options differ from men's.

Are saw palmetto and pumpkin seed oil safe and effective?

They are generally well tolerated and have early, limited evidence for modestly influencing DHT. They are not proven replacements for medical treatment. Check with a pharmacist first if you take other medicines or are pregnant or breastfeeding.

Does diet lower DHT?

Diet will not reverse genetic hair loss, but correcting deficiencies in zinc, iron, protein and B vitamins supports normal hair. A whole-food pattern with less refined sugar is good for your hair and general health.

Is scalp massage worth doing?

Yes, as a low-risk habit. A few minutes a day boosts local blood flow and may help hair look thicker over months. It is a support, not a treatment on its own.

What is the single most effective way to block DHT?

For genetic, progressing hair loss the strongest evidence is with prescription 5-alpha reductase inhibitors such as finasteride or dutasteride. Because they have benefits and side effects, discuss them with a GP or dermatologist.