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less noise. more sense.

...to this

from this...

your bathroom shelf is full of broken promises.

Most oils weigh hair down. This doesn’t.
No perfume cloud — neutral scent, clean finish.
Built for consistency: 1–2 minutes, once daily.

what makes it different.

🧬

🌱

💪🏽

Close-up of a metallic molecule model against a dark background

five cosmetic peptides

peptides

A biomimetic blend including sh-Polypeptide-1 and sh-Oligopeptide-10, used in cosmetic formulations to support the appearance of thicker, fuller-looking hair.

scalp-friendly extracts

botanicals

Rosemary and Scutellaria Baicalensis help nourish the scalp surface; soybean and wheat germ extracts contribute to smooth, healthy-looking hair.

arginine + saw palmetto

actives

Arginine is an amino acid used in haircare to support the look of strength; Saw Palmetto is widely used in cosmetic products aimed at a fuller appearance.

results you can see.

science you can trust.

77 days

Maya, 32

BEFORE

AFTER

61 days

Ally, 27

BEFORE

AFTER

59 days

Daniel, 41

BEFORE

AFTER

73 days

Aisha, 27

BEFORE

AFTER

83%

users reported visibly thicker hair after 90 days of use.

International Journal of Cosmetic Science, 2015.

49 days

typical timeframe users report 1st visible improvement in density and scalp vitality.

Skinmed, 2015

2–4 weeks

early feel changes: scalp comfort and styling ease.

6–8 weeks

appearance of density around part and hairline.

12 weeks+

visible fullness with consistent daily use.

Gold and black GMP (Good Manufacturing Practice) certified badge on a white background

GMP-certified

doctor-owned

vegan & cruelty-free

texture

scent

side fx

finish

natural

peptide serum

lightweight

neutral

❌

clean, non-greasy

✅

minoxidil

liquid

medicinal

palpitations/dry scalp

sticky

😂

oils

oily/heavy

perfumed

minimal growth

weighs hair down

varies

🔬 what's inside

ingredients (for the science nerds). because its what's inside that truly matters.

sh-Oligopeptide-1

50 μg

Biomimetic peptide studied for its role in epidermal growth factor (EGF) signaling, supporting the appearance of thicker, denser hair. Study – PubMed

scalp vitality support

sh-Oligopeptide-10

50 μg

Cosmetic peptide shown in research to support extracellular matrix activity, improving scalp conditions for fuller-looking hair. Dermatol Ther. 2019

matrix feel + density appearance

White granulated sugar on a black background

Arginine

200 mg

Essential amino acid studied for keratin production and scalp circulation, contributing to stronger-looking, more resilient strands. Int J Trichology. 2017

strand strength look

Saw palmetto

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Eucalyptus extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Green rosemary branch with water droplets on a dark surface

Rosemary extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

sh-Oligopeptide-1

50 μg

Biomimetic peptide studied for its role in epidermal growth factor (EGF) signaling, supporting the appearance of thicker, denser hair. Study – PubMed

scalp vitality support

sh-Oligopeptide-10

50 μg

Cosmetic peptide shown in research to support extracellular matrix activity, improving scalp conditions for fuller-looking hair. Dermatol Ther. 2019

matrix feel + density appearance

Arginine

200 mg

Essential amino acid studied for keratin production and scalp circulation, contributing to stronger-looking, more resilient strands. Int J Trichology. 2017

strand strength look

Saw palmetto

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Eucalyptus extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Rosemary extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

sh-Oligopeptide-1

50 μg

Biomimetic peptide studied for its role in epidermal growth factor (EGF) signaling, supporting the appearance of thicker, denser hair. Study – PubMed

scalp vitality support

sh-Oligopeptide-10

50 μg

Cosmetic peptide shown in research to support extracellular matrix activity, improving scalp conditions for fuller-looking hair. Dermatol Ther. 2019

matrix feel + density appearance

Arginine

200 mg

Essential amino acid studied for keratin production and scalp circulation, contributing to stronger-looking, more resilient strands. Int J Trichology. 2017

strand strength look

Saw palmetto

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Eucalyptus extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

Rosemary extract

100 mg

Plant extract often used in clinical studies as a natural alternative to pharmaceutical DHT modulators, supporting visible hair density. J Altern Complement Med. 2012

fuller appearance

real people, real routines.

Person holding a bottle of regen peptide hair serum in front of a microphone and computer setup.

Man holding a bottle of regen hair serum in an indoor setting

Woman holding a bottle of regen hair product in a home setting

4.8/5 based on 1,046 verified reviews

Mildly skeptical at first. Around week seven I noticed baby hairs along my hairline. Not overnight, but real progress.

M

Maya P.

Verified

Lightweight, not greasy. Feels like skincare for the scalp. My crown looks denser after 3 months.

Daniel K.

Verified

Neutral scent, easy routine. By month two the thinning near my temples looked less obvious.

Aisha R.

Verified

Bought it on a whim. Smells neutral (thank god, no fake perfume) and easy to apply. I actually look forward to massaging it in at night. Hair feels thicker, not like straw anymore.

Josh L

Verified

I’ve tried rosemary oils and DIY stuff for years. This is the first serum that feels ‘clinical’ without being pharma. My scalp feels healthier, less itchy, and my ponytail doesn’t look as thin.”

Sofia M.

Verified

Results weren’t dramatic at first — almost quit. But around the 10-week mark, I saw real density coming back. Glad I stuck with it. Tip: take progress photos, it’s easier to see the change.

Chris D.

Verified

It’s clean, no parabens or silicones. That was huge for me. My hair feels stronger and I’m shedding less in the shower. Subscribed after my first bottle ran out.

Hannah S.

Verified

Not greasy, absorbs fast. I’ve tried The Ordinary before — this feels like the grown-up version. Pricey, but the texture and results are way better.

Jamie K.

Verified

My dermatologist recommended I avoid Minoxidil because of irritation. This serum has been the best alternative. Scalp feels calmer, and I’ve seen noticeable new growth around my part line.

Diane P.

Verified

I don’t usually write reviews, but regen. deserves it. Been using for 3 months, hair feels thicker and fuller. My wife even commented that it looks healthier. That’s all I needed

Mark H.

Verified

bundle & save

choose your offer

30-day supply

try it

$2.40 per day

less than a cup of coffee to protect your hairline

90-day money-back guarantee

If you don’t love the way your hair looks, we’ll refund you.

savings

upgrade to the 90-day supply to get more savings!

+ 4.95 shipping

add another bottle to get free shipping!

covers full 12-week results window

3 bottles on day one for an uninterrupted 12-week routine

save your hairline

90-day supply

🎉 best value

$2.17 per day

less than a cup of coffee to protect your hairline

90-day money-back guarantee

savings ($21 off)

save $7 per bottle 🤩

free shipping

arrives in 5 days or less

covers full 12-week results window

3 bottles on day one for an uninterrupted 12-week routine.

save your hairline

30-day supply

try it

$72

per bottle

90-day supply

🎉 best value

$64

$72

per bottle

just 3 simple steps to keep your hair

how to use.

Blue water droplet on a white background

Apply drops directly to the scalp once daily.

Massage for 1–2 minutes for even distribution.

Lightweight texture; no rinse needed.

FAQ

Ingredients & Safety

Orders, Shipping & Guarantee

Is it safe for color-treated or sensitive scalps?

Yes. The formula is free of fragrance, silicones, parabens, and phthalates. Patch test first if you’re sensitive.

Can I use it with other products?

Yes—apply regen. to clean scalp first, let it absorb fully, then layer other products. If using drug products, follow their directions and consult your provider if unsure.

Will it make my hair oily or weigh it down?

No. It’s a lightweight serum that absorbs quickly and leaves a neutral, non-greasy finish.

What are shipping speeds and costs?

US standard delivery is 3–4 business days. Free shipping on subscriptions and on one-time orders $75+; standard rates apply below that threshold.

What’s the guarantee?

A 90-day money-back guarantee. If you don’t love the way your hair looks and feels after consistent use, contact support for a refund.

How does subscription work?

Save 15% with free shipping. You can pause, skip, or cancel anytime from your account—no commitments.

vegan

doctor-owned brand

Round metallic badge with a stethoscope symbol on a white background

GMP-certified

made in USA

American flag design on a rectangular object with red, white, and blue colors.

cruelty-free

vegan

doctor-owned brand

GMP-certified

made in USA

cruelty-free

Find anything you need

regen - Peptide Hair Growth Serum

regen - Peptide Hair Growth Serum

less noise. more sense.

your bathroom shelf is full of broken promises.

what makes it different.

five cosmetic peptides

scalp-friendly extracts

arginine + saw palmetto

results you can see.

science you can trust.

83%

49 days

2–4 weeks

6–8 weeks

12 weeks+

🔬 what's inside

real people, real routines.

choose your offer

how to use.

FAQ

Find anything you need

Sign in to your account

Create an account

Item added to cart!

regen - Peptide Hair Growth Serum

regen - Peptide Hair Growth Serum

less noise. more sense.

your bathroom shelf is full of broken promises.

what makes it different.

five cosmetic peptides

scalp-friendly extracts

arginine + saw palmetto

results you can see.

science you can trust.

83%

49 days

2–4 weeks

6–8 weeks

12 weeks+

🔬 what's inside

real people, real routines.

choose your offer

how to use.

FAQ