We recommend 3-6 months of consistent use to see results.
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Description
A unique natural herb combination with digestive support for high nutrient absorption that combats hormonal hair loss at its root. Plant-based ingredients like saw palmetto and green tea extract help maintain healthy hormone balance. L-Lysine HCl reduces ongoing shedding, while grape seed extract promotes follicle growth. A science-backed supplement for long-term hair regrowth support.
Clinically developed blend of saw palmetto, stinging nettle, and EGCG to inhibit 5-alpha reductase—the enzyme that converts testosterone to DHT.
Supports Immune & Gut Health
Includes probiotics and antioxidants to help balance immune function, aid inflammatory responses, and improve nutrient absorption.
Developed for Maximum Hair Support
Goes beyond DHT blocking to target stress, poor diet, malabsorption, gut health, medications, and yeast overgrowth.
Trichologist-Developed, Clinically Trusted
Formulated by certified trichologist William Gaunitz with 20+ years of clinical experience, trusted by professionals worldwide.
How to use
Take 2 capsules in the morning and 2 capsules in the evening daily, 15 minutes before a meal. Always take with a meal. For best results, use consistently for a minimum of 3-4 months.
The foundation
The formula starts working from the inside. Shedding begins to slow as follicles get relief from hormonal stress.
The shift
Shedding reduces significantly. Thinning areas start to hold and hair feels stronger at the root.
The result
Less shedding and the first signs of new growth. 83% noticed hair regrowth at six months.¹
Individual results will vary based on multiple factors, including but not limited individual biology, consistency and duration of use, and the severity and cause of hair loss.
Understanding The Science
Your scalp is under hormonal attack. DHT Blocker knows exactly how to fight back.
Hair loss isn't random — it maps to specific zones on the scalp, each with a distinct cause. DHT Blocker is formulated to target Zone 1, where hormonal imbalance shrinks follicles and shortens growth cycles.
Zone 1TM
Hormonal Hair LossDHT is quietly shrinking your follicles.
Zone 2TM
Nutritional Hair LossYour follicles are starving for nutrients.
Zone 3TM
Inflammatory Hair LossScalp irritation blocks the growth cycle.
Zone 1™ · Hormonal
Your follicles are shrinking. And you don't know it.
Testosterone can convert into DHT, which can bind to susceptible hair follicles and gradually shorten the growth cycle — leading to finer, weaker strands and visible thinning, especially at the temples and crown.
83%Reported and noticed hair regrowth.¹
Zone 2™ · Nutritional
Your follicles are starving. And you don't know it.
Deficiencies in key vitamins, minerals, and nutrients can disrupt the hair growth cycle, leading to increased shedding, diffuse thinning, and weaker growth. Correcting these nutritional gaps helps create the foundation follicles need to grow normally.
85%Reported a reduction in shedding.¹
Zone 3™ · Inflammatory
Your follicles are irritated. And you don't know it.
When the scalp becomes irritated — from stress, immune responses, or product buildup — blood flow to follicles is restricted and the growth cycle breaks down. Calming botanicals and targeted nutrients help restore a healthy scalp environment where hair can grow.
Real before-and-afters from real HairStem™ users — at 60, 90 and 180 days. No filters. No retouching.
“Hair loss is stressful, scary, and heartbreaking so I wanted to provide an early review so others, like myself, can have a bit of a sigh of relief. I’m happy with my experience.
Regrowth Visible
180-Day Journey
Denser Roots
Regrowth Visible
New strands coming in where hair had stopped growing.
180-Day Journey
tayed consistent and the results were worth every day.
Denser Roots
Hair growing back fuller and stronger from the root up.
“I had tried everything and given up when I found Advanced Trichology. At first I
thought nothing was happening, but I stuck to the plan and my hair actually grew back!”
Regrowth Visible
180-Day Journey
Denser Roots
Regrowth Visible
New strands coming in where hair had stopped growing.
180-Day Journey
Stayed consistent and the results were worth every day.
Denser Roots
Hair growing back fuller and stronger from the root up.
“My confidence took a hit when my hair started thinning, but sticking with the plan changed
everything. My scalp isn’t showing anymore, and my hair looks strong and full.”
Regrowth Visible
180-Day Journey
Denser Roots
Regrowth Visible
New strands coming in where hair had stopped growing.
180-Day Journey
Stayed consistent and the results were worth every day.
Denser Roots
Hair growing back fuller and stronger from the root up.
“I was losing confidence along with my hair, but after a few months on the Advanced
Trichology routine, I started seeing new growth. My before-and-after photos still surprise me.”
Regrowth Visible
180-Day Journey
Denser Roots
Regrowth Visible
New strands coming in where hair had stopped growing.
180-Day Journey
Stayed consistent and the results were worth every day.
Denser Roots
Hair growing back fuller and stronger from the root up.
Customer Reviews
Overall rating: 4.7 / 5 from 5366 reviews.
I would recommend this for the rest of my life. The best vitamin product for hair.
Decent product. Been using after wash from nizoral because it can be pretty drying to the scalp. Adds almost to much moisture even with less sprays as instructed. Makes it look more oily and flat rather then “fuller” as product describes.
I never leave reviews but, I had to come back after 2 months of using this product and let me tell you. My hair has thickened so much since I started using these supplements. I see a 95% reduction in hair shedding and my hair has grown a lot. Thanks to this company. I recommend anyone to try this product out...
As a result of using a special DHT shampoo plus this DHT supplement, I have seen quite a big difference in several months of use on my hair resulting more thickness, longer and softer feel. I am very satisfied so far with this product and only continued use will definitely be rewarding....
This is the best form of vitamin D/K in my mind. Has made a nice improvement in my hair growth. I will always continue to buy this. I also like that it’s in liquid form.
GLP1 hair loss- I had NO warning this was a major contraindication until there was literally hair all over my house and not on my head anymore. I started on Advanced Trichology DHT Blocker and Foligrowth, and the NutraM scalp serum in July 2025 (before pic), results were very noticeable by Feb 2026 (after pic). Pictures say it all.
I've been using this DHT blocker for about 2 months now. I see new growth on the front of my scalp all the way down to the side of my face. I may have it all over my scalp but I can't really tell. I would highly recommend this product.
After 1 month, my hair has a lot more volume than ever before. Highly recommend to everyone who wants to improve thair hair.
Great product would rate it seven starz
🌟🌟🌟🌟🌟🌟🌟
I have to say I think it's working. I noticed a difference in the first 2 weeks. I am about to start my 3rd bottle and I feel like it has helped me to not lose my mind. I was losing hair as if I had chemo treatments but not it is more like 4 to 5 hairs a day. I am suffering from a scalp issue now but am about to see a dermatologist to find out what it is.
Every ingredient in DHT Blocker has a purpose, from inhibiting 5-alpha reductase to supporting gut health and immune function for optimal nutrient absorption.
11 active ingredients
A targeted blend of herbs, probiotics, and botanicals — formulated to block DHT naturally.
Trichologist-Developed
Created by certified trichologist William Gaunitz, WTS. Supported by 20 years of expertise in hair growth solutions.
100% plant-based formula
No synthetic fillers. Every ingredient is there for a reason.
Gut health support
Probiotics and prebiotics for optimal nutrient absorption and immune balance.
120 vegetable capsules
Take 2 in the morning and 2 in the evening, 15 minutes before a meal.
Targets 5-alpha reductase
DHT Blocker inhibits the enzyme that converts testosterone to DHT — the leading cause of hormonal hair loss.
Inside DHT Blocker
The nutrients your follicles have been asking for.
+2,120 people tried FoliGROWTH® and documented what happened. Here's what they found.
“I had tried everything and given up when I found Advanced Trichology. At first I thought nothing
was
happening, but I stuck to the plan and my hair actually grew back!”
“Hair loss is stressful, scary, and heartbreaking so I wanted to provide an early review so
others, like
myself, can have a bit of a sigh of relief. I’m happy with my experience.
“I was losing confidence along with my hair, but after a few months on the Advanced Trichology routine, I
started seeing new growth. My before-and-after photos still surprise me.”
“My shedding slowed down first, then I noticed baby hairs coming in. It’s the first time in years I feel
hopeful about my hair.”
“I used to avoid bright lighting because my scalp showed so much. Now my hair looks fuller and healthier,
and friends keep asking what I changed.”
“I followed the plan exactly and the results were worth it. My hair feels stronger, my part looks smaller,
and I finally see real regrowth.”
“I bought the products out of desperation, but they exceeded my expectations. My hair is thicker, my scalp
feels better, and my confidence is up.”
“I could see my hair thinning in photos, which was heartbreaking. After sticking with Advanced Trichology
for a few months, the change has been dramatic.”
“My stylist noticed the improvement before I did. She said my hair looked fuller and healthier — and now I can see the difference in every picture.”
“I wasn’t expecting fast results, but consistency really paid off. My hair is growing again, and my scalp isn’t irritated anymore.”
“The transformation has been incredible. I went from visible thinning to a fuller head of hair, and I’m more confident going out without hats.”
“I was skeptical because I’d tried so many things, but this is the first routine that made a visible difference. My hair looks fuller and feels healthier than it has in years.”
“I used to dread washing my hair because of how much I’d lose. Now the shedding has slowed down, and I’m actually seeing new growth in the spots that worried me the most.”
“I didn’t expect my before-and-after photos to look this different. My hair feels thicker, my part has filled in, and I finally feel like myself again.”
“My confidence took a hit when my hair started thinning, but sticking with the plan changed everything. My scalp isn’t showing anymore, and my hair looks strong and full.”
“I had patchy thinning around my temples, and now those areas are filling back in. It feels amazing to finally see progress.”
“My thinning was getting worse every month, and it really scared me. After staying consistent, I started seeing small improvements that turned into big ones.”
“I kept seeing progress month after month — less shedding, healthier strands, and now actual regrowth. I’m honestly thrilled with the results.”
William Gaunitz, WTS, spent over two decades studying why hair falls out — and more importantly, how to stop
it. His clinical research identified three root causes of hair loss: hormonal, nutritional, and
inflammatory. HairStem™ is the direct result of that work — not a trend product, but a clinically developed
formula tested across thousands of real patients.
Physician Reviewed Trichologist developed
Regrow the