Thicker, stronger, longer-looking hair. Whatever is behind your hair loss, this is the hair loss shampoo routine for women and men that reduces hair loss and increases hair density*, from the shampoo tested on 122 people for three months.
The 90 Day Money Back Guarantee. Use as directed and if you are not happy, we will refund you. How it works
Real improvements in both my own hair and my clients, from stronger strands to healthier scalp condition with consistent use.
Sarah Sullivan · Certified Trichologist, UK Trichology Clinic, Sheffield
Quality dedicated hair growth treatments such as the Watermans Grow Me range is an excellent starting point to consider. Diligent use for 3 to 4 months can see a reduction in hair thinning and the hope of healthier hair growth.
Dr Anthony Pearce · Specialist Trichologist, Anthony Pearce Trichology, Australia
Watermans products have been a lifesaver for almost every one of our clients. Sulphate free, with no harsh chemicals, and rich in beneficial ingredients such as biotin, caffeine, rosemary, niacinamide and argan oil.
Dr Nick Fisherman · Specialist Trichologist, Hair & Skin Club, Australia
Caffeine
Biotin
Rosemary
Niacinamide
Lupine protein
Argan oil
AllantoinHair does not change in one month. It grows around 1cm a month, and our 122-person study ran for three months. A subscription delivers a fresh set every 30 days at 15% off with free UK shipping, so you never run out mid-routine.
Pause, skip or cancel in two clicks from your account. If it is working, why would you stop?
Caffeine-only shampoos do not work. Grow Me® works as a team, in every wash:
Never with sulphates, parabens or palm oil. The shampoo is vegan. Cruelty-free. Made in the UK.
Grow Me® Shampoo: massage into a wet scalp and leave it on for 3 to 4 minutes so the formula can work on the follicles, then rinse. Four washes a week is what the study used.
Condition Me®: on the lengths and ends after every wash, rinse.
Grow More® Elixir: a few drops massaged into the scalp, no rinsing. One bottle of each lasts about 30 days.
Free UK shipping on orders over £45, so the Boost Set always ships free. Dispatched from the UK.
Subscriptions renew every 30 days. Pause, skip, change the date or cancel from your account in two clicks. No phone calls, no emails to chase.
Use as directed and if you are not happy, we will refund you. How it works
Month 1: scalp feels deep-cleaned and refreshed. Hair feels softer and detangles more easily.
Month 2: fewer snapped strands on your brush and pillow. Lengths feel stronger and look shinier.
Month 3: hair looks fuller and feels thicker as less of it breaks. Keep going to keep the result.
Every product below is in the Boost Set. Start with one, add the rest when you are ready. One of each lasts about 30 days.
The two-step daily routine. 6.5 million bottles sold since 2012
Cancel in two clicks from your account. No fees.
Best selling hair growth shampoo. 6.5 million bottles sold
The overnight leave-in step. Works while you sleep
Ideal if you cannot wash 4 to 5 times a week. Keeps the routine working between washes.
Whether you buy today or not, here is our advice after 14 years: upgrade your wash-and-go routine. Watermans shampoo needs at least 3 minutes on your scalp to work as intended.
The Watermans 90 Day Money Back Guarantee. Use as directed and if you are not happy, we will refund you. How it works
Add to your routine with one tap. Every product below is made in the UK, sulphate-free and designed to work alongside Grow Me®.
Masque Me® Repairing Hair Mask
Weekly deep repair for dry or damaged lengths, with the same hair growth ingredients as Grow Me®
Camellia & Black Castor Hair Oil
For your hair, skin and bath. Cuts drying time by up to 50% and leaves skin deeply hydrated
Protect Me® Leave-In Conditioner & Heat Spray
Stops heat, colour, chlorine and sun damage. Spray in before every heat tool
Hair, skin and nails vitamins. Biotin and zinc contribute to the maintenance of normal hair
122 people used unbranded Grow Me® Shampoo four times a week for three months. Here is what they said. See every result.
Why people trust Watermans
PETABusiness Friend
Sources: NHS, American Academy of Dermatology, British Association of Dermatologists. These are population figures, not results from our products.
Pick what you want answered. Tap a video to play with sound.
Every photo below was uploaded by the customer with their verified review. We have trimmed some quotes for length. Results vary from person to person.
50 days inCustomer's own photo“After 50 days I am very pleased. My hair might not feel thicker in a ponytail but it looks thicker and you can't see my scalp through my hair any more. I have ordered my second bottle to carry on for the recommended 3 months.”
7 weeks inCustomer's own photo“I've been using this shampoo and conditioner for about 6 to 7 weeks due to my hair randomly thinning. The improvement I've seen already is amazing. My confidence with my hair is much better and I've since purchased the set again and the hair mask.”
7 months inCustomer's own photo“I've been using this shampoo and conditioner for 6 to 7 months now and the difference in my hair is amazing. The condition of my coloured blonde hair is amazing, no breakage, super soft. I love it that much I bought the salon size in both.”
Long-term userCustomer's own photo“Rapid weight loss after surgery caused dramatic hair loss. I truly thought I was going to go bald. Then I discovered Watermans and won't use any other shampoo and conditioner. My hair is in beautiful condition, it's thicker than ever and I couldn't be happier.”
First weekCustomer's own photo“I haven't been using this product for a week yet and I'm already seeing improvement. My hair is fuller, it's glossy. I also have scalp psoriasis and it hasn't bothered me at all since I've been using this product.”
2 years inCustomer's own photo“I have been using Watermans for over 2 years and the proof is in my photos. I was a tape hair extension person for years so my hair was damaged and short with ratty ends. Now everyone asks me what I use.”
Repeat buyerCustomer's own photo“I had very thin hair before this shampoo. My hair is so healthy and thick now. I don't want to use any other shampoo but Grow Me.”
Most hair loss shampoos are a caffeine shampoo with a nice label. A supermarket shampoo is detergent and perfume. Grow Me® puts seven actives on your scalp for 3 to 4 minutes, every wash, and was tested on 122 people for three months.
If it is working, why would you stop?
*Based on an independent three-month consumer study of 122 people. See the note at the bottom of the page.
| Grow Me® Shampoo | Caffeine-only shampoo | Supermarket shampoo | |
|---|---|---|---|
| Reduces hair loss* | ✓ | ✕ | ✕ |
| Increases hair density, fuller-looking hair* | ✓ | ✕ | ✕ |
| Actives in every wash | Seven | One | None |
| Sulphate-free, no harsh detergents | ✓ | ✕ Usually not | ✕ |
| Left on the scalp so the actives can work | 3 to 4 minutes | ✕ Rinse off | ✕ Rinse off |
| Thicker, stronger, longer-looking hair* | ✓ | ✕ | ✕ |
| Tested on 122 people for three months | ✓ | ✕ | ✕ |
| Recommended by trichologists and hair loss surgeons | ✓ | ✕ | ✕ |
| Cruelty-free, and funds the fight against animal testing | ✓ | Varies | Varies |
| Made in the UK, Queen's Award winner | ✓ | ✕ | ✕ |
| Since 2012, 6.5 million bottles sold | ✓ | ✕ | ✕ |
| 90 Day Money Back Guarantee | ✓ | ✕ | ✕ |
£53.40£45.39 a delivery · £1.51 a day
The complete hair loss routine, delivered before you run out. Use all three together for optimal results and give it the full 90 days.
Real improvements in both my own hair and my clients, from stronger strands to healthier scalp condition with consistent use.
Trichologists see hair loss every day, and the ones who recommend Watermans do it for a simple reason: a sulphate-free wash that puts seven actives on the scalp for 3 to 4 minutes, and clients who come back with hair that looks and feels fuller. Hair loss surgeons stock it for their patients too.
Caffeine-only shampoos do not work. If caffeine alone grew hair, every coffee company would sell shampoo. Grow Me® works as a team: caffeine wakes up the scalp and stimulates the follicles during the 3 to 4 minutes the shampoo sits on your head, and that is what lets the others get to work. Biotin, rosemary, niacinamide and lupine protein go in. Allantoin calms the scalp. Argan oil does its own job on the strand. Some of these have been used on hair for thousands of years. All seven, every wash.
For the formula to work, leave it on the scalp for 3 to 4 minutes before washing out.
Every Watermans formula is built on ingredients with their own test data, combined so they work on the scalp and the strand together.
Our actives are tested by the labs that make them. Our lupine protein was tested in the lab and on volunteers by our ingredient manufacturer. Caffeine, biotin, rosemary and niacinamide are among the most studied hair ingredients there are.
Our lupine protein is a trademarked active from our ingredient manufacturer: a hydrolysed lupine protein rich in peptides, trace elements and vitamins. It is in Grow Me® Shampoo and Grow More® Elixir.
Most shampoos lean on one hero ingredient. Grow Me® combines caffeine, biotin, rosemary, niacinamide, lupine protein, argan oil and allantoin, so the scalp and the strand are looked after in the same wash.
We have watched thousands of hair loss brands and products come and go, every one claiming to combat hair loss. Since 2012 Watermans has sold 6.5 million bottles, won a Queen's Award for Enterprise and run a three-month consumer study on 122 people. We are still standing. We must be doing something right.
Ingredient tests are carried out by the ingredient manufacturer. Our own three-month consumer study of Grow Me® covered 122 people.
Root causes
Most hair loss is one of these, and plenty of people have two at once. The medical side is for your GP. What you wash with is yours to control. Every card ends with the one thing you can do today.
Menopause, perimenopause, HRT changes, PCOS, thyroid problems and the contraceptive pill all change how long each hair spends growing, so the parting widens and the ponytail thins. Your GP can test for most of these. Wash with a routine that strengthens what you keep and does not strip the scalp. We go deeper on our hormonal hair loss page.
A shock, an operation, a high fever, Covid, a bereavement or a hard year pushes a crowd of hairs into their resting phase at once. They shed together two to three months later, and for most people it is temporary. Keep the routine gentle and consistent while it works through. More on our stress hair loss page.
Low iron is one of the most common causes of shedding in women, and crash diets, weight loss surgery and low protein starve hair of what it is made from. Hair is last in the queue when the body is short. Eat properly, and ask your GP for a ferritin check if you feel wiped out.
Heat, bleach, tight ponytails, rough towels and brushing wet hair snap strands halfway down. Broken hair has no white bulb on the end and looks exactly like thinning at the roots. This is the easiest one to fix: sulphate-free washing, a conditioner on the lengths, heat protection, and a weekly mask.
Pregnancy hormones hold on to extra hair for nine months, then let it all go at once around month three or four. It can look alarming on the pillow and in the plughole, and it is normal. Most mums see it settle by the first birthday. Our postpartum page has the full picture.
Pattern hair loss runs in families, in men and women. Each strand grows finer and the hairline, temples or crown thin first. No shampoo changes your genes, and we will not pretend otherwise. A GP or trichologist can confirm it, and a scalp that is not stripped every morning keeps the hair you have looking its fullest.
See your GP if hair comes out in round patches, falls out suddenly, your scalp is itchy, sore or scaly, or you feel unusually tired, cold or low alongside the shedding. Blood tests for iron, thyroid and vitamin D are quick and the common causes are treatable. A cosmetic routine works alongside that advice, never instead of it.
Swipe to see all 7 →
Ask the founder
Not sure which hair products you need? Ask Gail.
Gail Waterman co-founded Watermans in 2012 and has answered thousands of hair questions since. Her AI avatar on our homepage will ask about your hair, tell you which products suit it and which you can skip, and add them to your basket for you. Ask her anything, from "which products do I need for thinning hair?" to "how long until I see a difference?"
More from the range
The complete kits if you want every step, salon sizes for the whole family, or the travel set to try it first. All made in the UK, all sulphate-free.
FAQs
Watermans products are cosmetics. They are not medicines and do not treat medical hair loss. If your hair is falling out suddenly, in patches, or you are worried, please see your GP or a trichologist first. Prices, stock and review counts on this page were checked in October 2026.
The best shampoo for hair loss cleans the scalp gently, has no harsh sulphates, is left on the scalp long enough to work and strengthens fragile strands against breakage. Grow Me® Shampoo is made in the UK, combines caffeine, biotin, rosemary, niacinamide, lupine protein, argan oil and allantoin, is rated 4.87 out of 5 from over 2,600 verified reviews, and in an independent three-month study 83% of users said their hair looked fuller. It suits men and women.
The same one. Women most often see a wider parting and a thinner ponytail, and what matters is a sulphate-free shampoo that stays on the scalp for 3 to 4 minutes and strengthens fine strands so they stop snapping. Grow Me® was tested on 122 people, 104 of them women, and most said their hair looked fuller and their hair loss had noticeably slowed down*.
For men the first signs are usually the temples and the crown. Grow Me® is unisex: the same seven actives, left on the scalp for 3 to 4 minutes, four or five washes a week. Men who want a leave-in step add Grow More® Elixir on the hairline at night. It is a cosmetic, not a medicine, so there is nothing to prescribe.
No shampoo can stop medical or genetic hair loss, and any brand that claims otherwise is overselling. A good shampoo reduces breakage and keeps the scalp in good condition, which helps the hair you have look fuller. If hair is falling out suddenly or in patches, see your GP first.
See your GP if hair falls out suddenly, in round patches, with an itchy or sore scalp, or if you are worried. Blood tests can check iron, thyroid and vitamin levels. A cosmetic shampoo works alongside medical advice, never instead of it.
Hair grows on a slow cycle, so one bottle is enough to feel a cleaner scalp and softer hair, but not enough to judge fullness. One 250ml bottle used as directed lasts about a month. Our independent consumer study ran for three months, and the Watermans 90 Day Money Back Guarantee needs three bottles' use, which is why the plan delivers monthly.
Massage it into a wet scalp and leave it for 3 to 4 minutes so the actives have contact time, then rinse. Follow with Condition Me® on the lengths. Use it four to five times a week. In our study, 122 people used it four times a week for three months.
Yes. Grow Me® suits men and women of all hair types, including colour-treated, curly and Afro hair. It is sulphate-free, paraben-free and vegan, and it is made in the UK.
Yes, at any time, from your online account, with a clear cancel button. No calls, no emails, no fees. You can also pause, skip a delivery or change how often it comes. Cancelling takes effect before the next scheduled payment.
Yes. Use as directed and if you are not happy, we will refund you. How it works. Subscriptions can be paused, skipped or cancelled from your account in two clicks.
The results come from using them. Grow Me® and Condition Me® are cosmetic products that reduce breakage and keep the scalp in good condition while you use them. Stop, and over a few months your hair gradually goes back to how it was. That is why most customers treat the routine as something they keep, not a one-off fix.
Yes. Grow Me® is a cosmetic, not a medicine. There are no drugs in any Watermans product, so there is nothing to prescribe and no prescription to renew. Seven cosmetic actives do the work: caffeine, biotin, rosemary, niacinamide, lupine protein, argan oil and allantoin. If you are already using a treatment from your GP or a pharmacist, ask them before adding anything new to your routine.
Yes. PETA lists Watermans as cruelty-free: neither our ingredients nor our finished products are tested on animals, and our suppliers follow the same standard. We have never tested on animals, anywhere, and never will.
We don't just avoid animal testing, we actively fund the fight against it. Watermans is a featured PETA UK Business Friend and donates to PETA's work against animal cruelty. You can check us on PETA's cruelty-free list.
A kiss of life for hair
*Based on an independent consumer study of 122 people (104 women, 18 men) who used unbranded Grow Me® Shampoo four times a week for three months. Most users said their hair loss had noticeably slowed down, they noticed less shedding and less hair loss when brushing, their hair density had increased, their hair looked fuller and healthier, and it felt thicker and stronger. Consumer perception results. Individual results vary. Watermans products are cosmetics, not medicines, and do not treat medical hair loss. Full study report available on request.
