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#1 DOCTOR RECOMMENDED

HAIR GROWTH BRAND ·

#1 DOCTOR RECOMMENDED

HAIR GROWTH BRAND ·

Bestseller

CLINICIAN'S CHOICE

Daily Hair Growth

Nutraceutical

4.5 · 919 reviews

90 day money-back guarantee

Powered by 16 clinically recognized, all-natural ingredients, this advanced formula nourishes follicles from the inside out to visibly stop thinning and support thicker, stronger, faster-growing hair.

Visibly Thicker Hair or Your Money Back

Made in the USA | Quality Guaranteed

A before-and-after image of a person's scalp, showing thinning hair on the left and fuller hair on the right.A before and after comparison of the back of a man's head, showing hair regrowth on the crown.A before-and-after comparison of a person's curly hair, showing increased hair fullness and less visible scalp.A before-and-after comparison of a woman's hairline, showing thinning hair on the left and fuller hair on the right.Side-by-side images of a woman's hairline, showing thinner hair on the left and fuller hair on the right.A before and after image showing a woman's hair looking thicker and fuller on the right.A before-and-after image showing the back of a woman's head, with thinner hair on the left and fuller hair on the right.A side-by-side comparison showing thinning hair on the left and fuller, thicker hair on the right.
A before-and-after image of a person's scalp, showing thinning hair on the left and fuller hair on the right.A before and after comparison of the back of a man's head, showing hair regrowth on the crown.A before-and-after comparison of a person's curly hair, showing increased hair fullness and less visible scalp.A before-and-after comparison of a woman's hairline, showing thinning hair on the left and fuller hair on the right.Side-by-side images of a woman's hairline, showing thinner hair on the left and fuller hair on the right.A before and after image showing a woman's hair looking thicker and fuller on the right.A before-and-after image showing the back of a woman's head, with thinner hair on the left and fuller hair on the right.A side-by-side comparison showing thinning hair on the left and fuller, thicker hair on the right.

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

The MSN logo, which features a butterfly symbol followed by the letters msn.
The MSN logo, which features a butterfly symbol followed by the letters msn.
The MSN logo, which features a butterfly symbol followed by the letters msn.
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See the difference for yourself.

Verified customer before & after photos — unretouched, unfiltered.

The Ultimate Hair Growth Vitamin

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Stops Hair Loss at the Root

Protects Color & Fights Graying

Calms Scalp Inflammation

Addresses Multiple Causes of Loss

Kiierr

swipe to see all treatments →

Ingredients backed by research.

Kiierr's Daily Vitamins aren't a wellness trend — they're powered by some of the most clinically studied natural hair loss ingredients available today.

ALL NATURAL

Clinically SUPPORTED

Real data. Real growth.

Real data. Real growth.

CUSTOMER SURVEY RESULTS

LLLT cap + VITaMINS

+35 hairs/cm²

Placebo

+3 hairs/cm²

Terminal hair count increase

*In customer reported results over 6+ months, Kiierr Vitamin users saw approximately 35+ new hairs per cm² compared to placebo.

CUSTOMER SURVEY RESULTS

+92

%

LLLT CAP

CAP + VITAMINS

ENHANCED RESULTS

when vitamins added to laser cap therapy*

Frequently Asked Questions

Message us at sales@kiierr.com to connect with a dedicated support agent. Our small, knowledgeable team personally responds to every email (no bots or AI). We’re always here to help and make sure your questions are answered quickly & with care.

How do the vitamins actually work

Why should I use them alongside the Kiierr Laser Cap?

How long does it take to see results?

Are they safe?

What makes them different from a basic hair vitamin?

Trusted by 125k+ Happy Customers

4.9 (2145 reviews)

Two photos showing the top of a person's head with thinning hair.

Dana M.

I started taking the Kiierr Daily Hair Growth Nutraceuticals about 6 months ago after noticing my part getting wider. I wasn't expecting much honestly, but by month 4 my hair felt noticeably thicker. My hairdresser commented before I even said anything. Really impressed with these.

Two images showing the top of a person's head with thinning gray hair.

Yvonne K.

Post-partum hair loss hit me really hard after my second baby. I was embarrassed to even wear my hair down. The Kiierr Nutraceuticals helped slow the shedding within the first couple of months and by month 5 I had real regrowth along my temples. Feel like myself again.

Side-by-side comparison of hair parting with visible scalp.

Theresa B.

I was skeptical about supplements in general but the ingredient list on the Kiierr Nutraceuticals is unlike anything else out there. Five months in and my hair is shedding far less and growing noticeably faster. My stylist actually asked if I'd changed something. I had.

Side-by-side comparison of a person's scalp, showing thinning hair and fuller hair.

Raymond G.

I've tried every hair vitamin on the market. Most are just biotin with fancy packaging. The Kiierr formula is different. You can tell by the ingredient list alone. Six months in and I have less shedding and noticeably more density on my crown. Worth every penny.

Two images comparing the top view of an older person's head with grey hair.

Gloria R.

I lost a significant amount of hair going through menopause and had basically accepted it. A friend recommended the Kiierr Nutraceuticals and I figured I'd try them. Six months later I have actual baby hairs growing in along my part. I am so glad I didn't give up.

Side-by-side comparison of a balding and a fuller head of hair.

Angela S.

I was losing hair after stopping birth control and was desperate for something natural. I've been on the Kiierr Nutraceuticals for 5 months now and the shedding has slowed dramatically. My ponytail is visibly thicker. So relieved I found something that actually works.

A woman with sunglasses, smiling outdoors, in split images left and right.

Susan L.

I've been taking the Kiierr Daily Nutraceuticals for about 9 months now. Slow and steady is the name of the game with these. Around month 4 things started clicking and now my hair is the fullest it's been in years. My dermatologist was genuinely impressed at my last visit.

Side-by-side comparison of different hairlines in close-up view.

Christine V.

I use the nutraceuticals daily and pair them with the laser cap four times a week. It took patience but around month 5 everything changed. My hair is thicker, my scalp is healthier, and I finally stopped dreading washing my hair. Kiierr has genuinely been a game changer for me.

A before-and-after image showing a woman's hair from the side, appearing thicker and fuller in the second photo.

Carolyn H.

I'm 61 and started the Kiierr Daily Nutraceuticals after my doctor mentioned my thinning was hormonal. Four months in and I'm seeing small hairs along my hairline that weren't there before. At my age I honestly didn't think regrowth was possible. Pleasantly shocked.

A side-by-side comparison showing thinning hair on the left and fuller, thicker hair on the right.

Nate C.

Easy to add to my morning and evening routine. One capsule with each meal. I've been consistent for 7 months and the results speak for themselves. Less shedding, thicker strands, and my wife says my hair looks better than it did 10 years ago.

A before and after comparison of a man's hair, showing thinning hair on the left and thicker hair on the right.

Trevor B.

I've been using the nutraceuticals alongside the laser cap since January. The combination is no joke. My hairline has filled in more in 6 months than it had in the previous 3 years of trying other products. Wish I had found Kiierr sooner.

A before-and-after image showing a man's hair growth from thin and sparse to thick and full.

Brian W.

I started with just the laser cap but added the nutraceuticals after reading about how they complement each other. That was the turning point for me. Within a few months of using both together I started seeing growth I hadn't expected. The science behind the combination makes total sense.

Comparison of a bald scalp and a hair-covered scalp.

Harold F.

I'm 70 years old and my doctor suggested I look into natural DHT blockers before considering anything prescription. Found Kiierr and haven't looked back. Eight months on the nutraceuticals and my crown has more coverage than it's had in years. Remarkable for my age.

Two side-by-side images showing hair growth progression on a person's scalp.

Melissa T.

I use the nutraceuticals with the laser cap three times a week. Started both at the same time about 8 months ago. The before and after photos I took are honestly hard to believe. My confidence is completely back. I tell every friend who mentions hair loss about Kiierr.

Two close-up images showing changes in gray hair coverage on a person's scalp.

Jason M.

I've been using the laser cap for two years and added the nutraceuticals six months ago. Adding the vitamins was the best decision I made. The cap maintained what I had but combining it with the nutraceuticals actually pushed new growth I wasn't seeing before. Great products.

Comparison of hair with visible scalp and fuller hair without visible scalp.

Olivia N.

I started the Kiierr Daily Hair Growth Nutraceuticals after years of watching my hair thin along the crown. I paired them with the laser cap from day one and committed to being consistent. By month 3 the shedding had slowed and by month 6 my hair was fuller than it had been in a long time.

4.9 (919 reviews)

Dana M.

I started taking the Kiierr Daily Hair Growth Nutraceuticals about 6 months ago after noticing my part getting wider. I wasn't expecting much honestly, but by month 4 my hair felt noticeably thicker. My hairdresser commented before I even said anything. Really impressed with these.

A before and after comparison of a man's hair, showing thinning hair on the left and thicker hair on the right.

Trevor B.

I've been using the nutraceuticals alongside the laser cap since January. The combination is no joke. My hairline has filled in more in 6 months than it had in the previous 3 years of trying other products. Wish I had found Kiierr sooner.

A before and after image showing the back of a woman's head with thinning hair and then fuller hair.

Angela S.

I was losing hair after stopping birth control and was desperate for something natural. I've been on the Kiierr Nutraceuticals for 5 months now and the shedding has slowed dramatically. My ponytail is visibly thicker. So relieved I found something that actually works.

A before-and-after image showing a woman's hair from the side, appearing thicker and fuller in the second photo.

Carolyn H.

I'm 61 and started the Kiierr Daily Nutraceuticals after my doctor mentioned my thinning was hormonal. Four months in and I'm seeing small hairs along my hairline that weren't there before. At my age I honestly didn't think regrowth was possible. Pleasantly shocked.

A before and after comparison of the back of a man's head, showing hair regrowth on the crown.

Raymond G.

I've tried every hair vitamin on the market. Most are just biotin with fancy packaging. The Kiierr formula is different. You can tell by the ingredient list alone. Six months in and I have less shedding and noticeably more density on my crown. Worth every penny.

Before-and-after view of a woman's hair from behind, showing thinning hair on the left and fuller hair on the right.

Melissa T.

I use the nutraceuticals with the laser cap three times a week. Started both at the same time about 8 months ago. The before and after photos I took are honestly hard to believe. My confidence is completely back. I tell every friend who mentions hair loss about Kiierr.

Side-by-side images of a woman's hairline, showing thinner hair on the left and fuller hair on the right.

Yvonne K.

Post-partum hair loss hit me really hard after my second baby. I was embarrassed to even wear my hair down. The Kiierr Nutraceuticals helped slow the shedding within the first couple of months and by month 5 I had real regrowth along my temples. Feel like myself again.

A before-and-after image showing a man's hair growth from thin and sparse to thick and full.

Brian W.

I started with just the laser cap but added the nutraceuticals after reading about how they complement each other. That was the turning point for me. Within a few months of using both together I started seeing growth I hadn't expected. The science behind the combination makes total sense.

A before and after image showing a woman's hair looking thicker and fuller on the right.

Susan L.

I've been taking the Kiierr Daily Nutraceuticals for about 9 months now. Slow and steady is the name of the game with these. Around month 4 things started clicking and now my hair is the fullest it's been in years. My dermatologist was genuinely impressed at my last visit.

A side-by-side comparison showing thinning hair on the left and fuller, thicker hair on the right.

Nate C.

Easy to add to my morning and evening routine. One capsule with each meal. I've been consistent for 7 months and the results speak for themselves. Less shedding, thicker strands, and my wife says my hair looks better than it did 10 years ago.

A before and after comparison showing increased fullness in thinning white hair on a person's scalp.

Gloria R.

I lost a significant amount of hair going through menopause and had basically accepted it. A friend recommended the Kiierr Nutraceuticals and I figured I'd try them. Six months later I have actual baby hairs growing in along my part. I am so glad I didn't give up.

A before and after image showing the back of a person's head with fuller-looking hair on the right.

Jason M.

I've been using the laser cap for two years and added the nutraceuticals six months ago. Adding the vitamins was the best decision I made. The cap maintained what I had but combining it with the nutraceuticals actually pushed new growth I wasn't seeing before. Great products.

A before-and-after image of a person's scalp, showing thinning hair on the left and fuller hair on the right.

Theresa B.

I was skeptical about supplements in general but the ingredient list on the Kiierr Nutraceuticals is unlike anything else out there. Five months in and my hair is shedding far less and growing noticeably faster. My stylist actually asked if I'd changed something. I had.

A side-by-side before and after comparison of hair regrowth on the top of a person's head.

Harold F.

I'm 70 years old and my doctor suggested I look into natural DHT blockers before considering anything prescription. Found Kiierr and haven't looked back. Eight months on the nutraceuticals and my crown has more coverage than it's had in years. Remarkable for my age.

A before and after image showing the back of a woman's head with thinning and then fuller-looking hair.

Christine V.

I use the nutraceuticals daily and pair them with the laser cap four times a week. It took patience but around month 5 everything changed. My hair is thicker, my scalp is healthier, and I finally stopped dreading washing my hair. Kiierr has genuinely been a game changer for me.