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HAIR & SKIN
SKINCARE ESSENTIAL
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#1 DOCTOR RECOMMENDED
HAIR GROWTH BRAND ·
CLINICIAN'S CHOICE
Thicker, Fuller Hair in 90 Days
15-in-1 DHT-Blocking Shampoo
4.9 · 2214 reviews
90-DAY 'REGROW OR IT'S FREE' GUARANTEE
Blocks DHT with 15 micro-extracted ingredients
Recommended by 1,022+ clinicians
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90 Day Guarantee
Beware of Cheap DHT Blockers.
Most "DHT-blocking" shampoos are diluted and don't work. Only our formula uses clinically backed actives strong enough to actually block DHT at the follicle.
1022 clinicians recommend Kiierr on FrontrowMD without compensation.
Description
Formulated with over a dozen active ingredients, including DHT blockers, scalp stimulators, and hair-strengthening keratin, Kiierr Hair Growth Shampoo goes far beyond cleansing to treat thinning hair at its source with every single wash.
Consistent long term use is what separates people who see real, lasting results from those who don't. Your follicles need continuous support to stay healthy and productive.
Ingredients
Ginkgo Biloba & Kigelia Africana — Boost scalp circulation to deliver oxygen and nutrients to the follicles and extend the hair's growth phase.
Clary Sage, Cinnamon & Zinc PCA — Target DHT, the hormone behind follicle thinning, while cleansing the scalp of buildup and excess oil.
Hydrolyzed Keratin & Panthenol (Vitamin B5) — Rebuild and reinforce the hair shaft, adding strength, thickness, elasticity, and moisture.
Jojoba & Wheat Germ Oil — Nourish the scalp and protect follicles from oxidative stress, with Vitamin E to guard against premature shedding.
Collagen Amino Acids & Hydrolyzed Glycosaminoglycans — Replenish and deeply hydrate, leaving hair fuller and smoother.
Other Ingredients: Water, Disodium Laureth Sulfosuccinate, Propylene Glycol, Cocamidopropyl Betaine, Cocamide MEA, Sodium Olefin Sulfonate, Acetamide MEA, Glycerin, Sorbitol, Cocoyl Sarcosine, Polysorbate 20, Tocopherol, Tocopheryl Acetate, Polysorbate 80, Fragrance, Diazolidinyl Urea, Iodopropynyl Butylcarbamate, Tetrasodium EDTA, Ext. Violet 2, Citric Acid, PEG-150 Pentaerythrityl Tetrastearate, PEG-6 Capric/Caprylic Glycerides.
Instructions
How to Use
Wet your hair thoroughly with warm water, then apply Kiierr Hair Growth Shampoo directly to the scalp and roots. Gently massage in circular motions for 1-2 minutes to stimulate the scalp and work the formula into the hair follicles, then distribute through the lengths of your hair. Leave on for up to 5 minutes then rinse thoroughly with warm water.
Each bottle contains 8 oz of shampoo. How long a bottle lasts and how many you'll need per month depends on your hair length & how often you wash.
For Best Results
Consistent daily or near-daily use is key. Hair growth is a gradual process and clinical results are typically seen after 90 or more days of regular use. We recommend starting with a supply that covers at least three months to give the formula time to work.
Shipping & Returns
Fast Shipping
Orders are processed and shipped quickly so you can start your hair growth journey without delay. Standard shipping typically arrives within 3–5 business days. Expedited options available at checkout.
Our 90-Day Money-Back Guarantee
We stand behind our shampoo completely. If you're not satisfied with your results after 90 days of consistent use, we'll make it right.
Hair growth is a journey and we're committed to being your partner every step of the way. That's why we back every order with our industry-leading guarantee. You have nothing to lose, except the hair loss.
Questions? Reach us at sales@kiierr.com
90 day guarantee
Regrow hair or it's free
If you don't see thicker, fuller hair within 90 days, we'll refund you in full. See policy for details.
AS SEEN IN
See the difference for yourself.
Verified customer before & after photos — unretouched, unfiltered.
I'd tried every shampoo on the market before Kiierr and honestly expected nothing different. By month 3 my hairline had visibly stopped receding and my scalp felt healthier than it had in years.
Michael T.
Verified customer
Male pattern
My hair has been thinning a little for a while. Not too bad but I wanted to get ahead of it before it got worse. Kiierr products are amazing. My hair feels so much thicker now.
Steve K.
THINNING
Stress had taken a serious toll on my hair over the past 2 years and I could see my scalp through my crown. With Kiierr the thinning had noticeably slowed and new growth was coming in thicker.
James D.
STRESS
I started noticing thinning along my part in my late 30s and assumed it was just aging. After using this shampoo consistently my hair felt denser overall.
Randy M.
Age-related
LLLT Caps
The Ultimate Hair Growth Shampoo
Stops Hair Loss at the Root
Strengthens & Repairs Hair Strands
Nourishes Scalp with Conditioning Oils
Addresses Multiple Causes of Loss
Kiierr
Nutrafol
Hims
Spartan
Nioxin
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Ingredients backed by research.
Clinically supported ingredients reawaken dormant follicles & rebuild visible thickness.
ALL NATURAL
Clinically SUPPORTED
Our 15-Active Formula
Each ingredient is carefully selected for its unique role — to stop shedding and restore visible density at the root.
DHT Block
Zinc PCA
Helps block DHT & balance scalp oil
HYDRATE
Hydrolyzed Glycosaminoglycans
Hyaluronic-family active that binds moisture to hydrate hair
Scalp
Kigelia Africana Fruit Extract
African botanical that tones the scalp
Circulation
Ginkgo Biloba Leaf Extract
Boosts microcirculation to the follicle
Stimulate
Cinnamon Bark Extract
Warms the scalp to stimulate follicles
Balance
Clary Extract
Balances oil and soothes the scalp
Repair
Hydrolyzed Keratin
Rebuilds weak, brittle strands
Strength
Collagen Amino Acids
Replenishes amino acids to fortify hair
Nourish
Wheat Germ Oil
Nutrient-rich oil that nourishes hair
Jojoba Seed Oil
Mimics natural oils to balance & moisturize
Antioxidant
Tocopherol
Vitamin E that protects the follicle
Hydrate
Panthenol
Pro-vitamin B5 locks in moisture
Glycerin
Humectant for hydrated, smooth hair
Condition
Sorbitol
Natural humectant that softens hair
Cleanse
Cocoyl Sarcosine
Gentle coconut cleanser, no stripping
View Full Ingredient List
Real data. Real growth.
CUSTOMER SURVEY RESULTS
Kiierr shampoo + LLLT
+41 hairs/cm²
Placebo
+3 hairs/cm²
Terminal hair count increase
*In customer reported results over 6+ months, Kiierr Vitamin users saw approximately 41+ new hairs per cm² compared to placebo.
+95
%
PLACEBO
KIIERR
STRONGER, HEALTHIER HAIR
after 90 days of use*
Trusted by 125,000+ Men
4.9 average from 2,214 verified reviews
JR
Jason R.
✓ Verified
I started noticing my temples looking thinner, especially after a shower when my hair was wet. I have been using this consistently for a few months, and my hair feels stronger and looks healthier overall. I am also seeing a lot less hair in the drain. It is easy because I just use it like a normal shampoo, and it does not leave my hair greasy or weighed down.
SK
TS
Tony S.
My hair had gotten noticeably thinner and it made certain haircuts look bad. I added this to my normal shower routine and stayed consistent. The area looks less obvious now, and my hair feels thicker and smoother. My wife even mentioned that my hair looked fuller before I said anything to her.
MP
Mike P.
The crown was my biggest problem. In pictures taken from behind, I could clearly see more scalp than I wanted. Since using this shampoo, the area looks less noticeable and my hair has more body. It also feels clean without getting dried out like some other thickening shampoos I have tried.
CM
Chris M.
I started using it because my crown was becoming more obvious under overhead lights. I have been consistent with it, and the top of my hair looks noticeably better now. My hair feels thicker, and I do not have to work as hard to make it look decent in the morning. Just a really easy product to add to my routine.
GW
Greg W.
My hair has gradually thinned out with old age. I was not expecting an overnight miracle, but I did want something that could help it look healthier. I use the laser cap too but the shampoo really helped also. It feels stronger after washing now, and I get more volume when I style it. I have also noticed less shedding than before.
DC
Daniel C.
I went through a pretty stressful few months and started shedding like crazy. Hair was all over my hands in the shower and on the bathroom counter. After sticking with this, the shedding has slowed down quite a bit and my hair does not feel as weak. Definitely happy I gave it a chance.
RL
Ryan L.
The hair on top of my head had gotten thin enough that I could see my scalp right after washing it. I was worried this would dry my hair out, but it has actually been pretty gentle. My hair feels healthier and has more texture now, and the thin area does not stand out as much. It took some patience, but I am happy with the improvement.
NK
Nick K.
I always noticed the thinner spots around my crown whenever my hair was cut short. This shampoo gives my hair a fuller look without making my scalp feel dry or itchy. The sides are not as noticeable as they used to be, and my hair feels stronger when I run my hands through it.
BT
Brian T.
My hair had slowly been getting thinner on top, and bright bathroom lighting made it look even worse. I wanted something simple that did not involve adding another complicated step to my day. After a few months, my hair feels stronger at the roots and the top looks fuller than it did before.
EH
Eric H.
My thinning was mostly along the side. After using this regularly, my hair feels stronger and easier to manage. It also looks fuller after drying instead of falling completely flat. So far, so good.
SW
Scott W.
I wanted to do something about my thinning before it got really noticeable. My hair was starting to look flatter on top, and I was seeing more of it in the shower. After a few months of using this, my hair feels healthier and has more body. The shedding has also gone down. It still looks natural, just thicker and easier to style.