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4.7
Rated 4.7 out of 5 stars
102 Reviews

DENSITY HAIR SERUM

A single peptide scalp serum for the look of fuller, stronger hair.

30mL dropper, 1% AHK-Cu

DENSITY HAIR SERUM
DENSITY HAIR SERUM
DENSITY HAIR SERUM
  • Supports a healthy looking scalp
  • Promotes the look of fuller, thicker hair
  • AHK-Cu Copper Peptide at 1%, the only active
  • Lightweight, fast drying and fragrance free
  • Twice a day, morning and night
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The 90 Day Keep It Guarantee

Use DENSITY for 90 days. If it does nothing for you, email us for a full refund and keep the bottle.

One active, and its percentage is printed on the bottle.

Active
AHK-Cu Copper Peptide1%

30mL dropper. No fragrance, fillers or sulfates.

AHK-Cu Copper Peptide

A copper tripeptide used in hair and scalp formulas. In DENSITY it is a cosmetic ingredient at 1%, supporting the look of fuller, healthier hair.

What is AHK-Cu?

A synthetic copper peptide used in hair and scalp formulas. DENSITY uses it at 1% as its single active.

How long until I see a change?

Start evaluating at four to eight weeks. Clearer differences come after two to three months of twice daily use.

Can I use it with retinol?

Yes. Separate them by morning and night instead of layering.

Is it for men and women?

Yes. DENSITY is for anyone noticing thinning at the crown, hairline or part.

One Peptide, Built For Your Scalp

Scalp First

Scalp First

Supports a comfortable, conditioned scalp, the base for good looking hair.

Fuller Looking Hair

Fuller Looking Hair

Promotes the look of thicker, stronger hair in thinning areas.

Clean Formula

Clean Formula

One active, with no fragrance and no sulfates.

Easy To Layer

Easy To Layer

Dries in minutes and sits under your usual products.

See Where DENSITY Goes To Work

Pick where you notice it first.

Thinning On Top
Step 01

Thinning On Top

  • More scalp shows in photos
  • Overhead lights are unkind
  • Hats become a habit
Apply And Massage
Step 02

Apply And Massage

  • A few drops on the thinning area
  • Fingertips for 30 to 60 seconds
  • Morning and night
Fuller Looking Crown
Step 03

Fuller Looking Crown

  • Supports a healthy looking scalp
  • Promotes the look of fuller coverage
  • Judge it at three months
A Hairline That Moved
Step 01

A Hairline That Moved

  • Temples look thinner
  • Old photos tell on you
  • Styling takes longer
One Active At 1%
Step 02

One Active At 1%

  • AHK-Cu is the only active
  • Zero fragrance or sulfates
  • A lightweight base that dries fast
Stronger Looking Hair
Step 03

Stronger Looking Hair

  • Supports the look of stronger strands
  • Helps hair look fuller at the temples
  • Layers under styling products
A Wider Part
Step 01

A Wider Part

  • The part looks broader than it did
  • Ponytails feel thinner
  • More hair in the brush
Scalp Care, Twice Daily
Step 02

Scalp Care, Twice Daily

  • Apply along the part on a clean scalp
  • Massage in gently
  • Let it dry before styling
Fuller Looking Part
Step 03

Fuller Looking Part

  • Supports a conditioned scalp
  • Promotes the look of fuller hair
  • Give it the full 12 weeks

Why DENSITY Uses One Peptide

Hair serums tend to list thirty ingredients and disclose the dose of none. DENSITY has one active and prints the percentage.

Start DENSITY
90 Day Keep It Guarantee

DENSITY

  • One studied peptide at 1%
  • Percentage printed on the label
  • No fragrance, fillers or sulfates
  • Lightweight and fast drying
  • Layers with your routine
  • Covered by a 90 day keep it guarantee

Typical Hair Serums

  • Undisclosed blends
  • Fragrance added
  • Greasy residue
  • Thirty ingredients, zero percentages
  • Hard to layer under styling products

How To Use DENSITY

Morning and night. That is the routine.

DENSITY HAIR SERUM
/ Start

Clean, Dry Scalp

Begin with a clean, towel dried or fully dry scalp.

/ Apply

Part And Drop

Part your hair and apply directly to thinning areas.

/ Massage

30 To 60 Seconds

Work it in with your fingertips.

/ Dry

Then Style

It dries in a couple of minutes. Apply your other products after.

DENSITY vs Thickening Shampoo vs Hair Fibers vs Biotin Gummies

Four things people try for thinning hair.

DENSITYThickening ShampooHair FibersBiotin Gummies
Single peptide at 1%
Applied directly to the scalp
Fragrance free
Leaves no residue
90 day keep it guarantee
Start DENSITY
90 Day Keep It Guarantee

See The Difference In 90 Days Or Get Your Money Back

Twice a day. Ninety days to decide.

Start DENSITY
90 Day Keep It Guarantee

Frequently Asked Questions

How do I use DENSITY?

Apply to a clean, dry scalp morning and night. Massage for 30 to 60 seconds and let it dry.

What is in it?

AHK-Cu Copper Peptide at 1% in a lightweight base, with no fragrance, fillers or sulfates.

How long until I see a change?

Start evaluating at four to eight weeks. Clearer differences come after two to three months.

Can I use it with retinol?

Yes. Use one in the morning and the other at night.

Is it for men and women?

Yes. DENSITY is for anyone noticing thinning at the crown, hairline or part.

Are there side effects?

Patch test first if your skin is sensitive, avoid broken skin and stop if irritation appears.

What is the 90 day guarantee?

Use DENSITY for 90 days. If you are not happy with it, email support@curetonix.com for a full refund. You keep the bottle.

Verified Purchases

What They Experience

4.7
Rated 4.7 out of 5 stars
Based on 102 reviews
100%would recommend this product
Slide 1 selected
102 reviews
  • DM
    DH M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 hours ago
    Too Early To Tell

    I have just started using the serum and cannot see a difference in my hair, but I have been applying it and have found that it is easy to apply and is not greasy or cause any noticeable problems with the hair. My hair looks the same with it applied or with it being applied and this does not attract dirt or cause the hair to get dirty faster.

    CURETONIX
    34 seconds ago

    Thanks so much for giving DENSITY HAIR SERUM a try, DH. We really appreciate you taking the time to share your experience, especially that it's easy to apply and works well with your hair without any greasiness. That's great feedback to hear.

  • WF
    Whitney F.
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Better every week

    I kept telling myself i just needed a trim. Id already tried volumizing mousse and silk pillowcases. six weeks in and my blowout lasts two days. I thought i was imagining it, then it kept holding.

  • HV
    Heather V.
    I recommend this product
    Rated 4 out of 5 stars
    1 month ago
    4 Stars

    With fine hair that nveer held volume, the crown looked sparse in phoots. Id already tried silk pillowcases and biotin gummies. Five weeks in and my hair feels thicker to the touch. On top of that my roots stay lifted all day.

  • G
    grace73
    I recommend this product
    Rated 4 out of 5 stars
    1 month ago
    Big CHANGE small bottle

    it kept showing up in my feed until i caevd. two months ltaer and my blowout lasts two days.

  • C
    Carl
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    This really works.

    I’ve been using this serum daily and I can clearly see a difference. My hair feels thicker and more resilient. The serum is lightweight, non-greasy, and very easy to apply. It has improved both my scalp health and hair texture. Highly recommended.

    CURETONIX
    1 month ago

    Carl, this is exactly what we love to hear! Thanks so much for taking the time to share your experience with DENSITY HAIR SERUM. We're thrilled that you're seeing real results and that the lightweight formula is working so well for your routine. Thanks for being part of our community.

DENSITY is a cosmetic product. Individual results vary.

Clinician Reviews

What hair and scalp professionals think

Dr. Monica Harris, MD
Dermatology · Washington, DC
License verified
★★★★★

“AHK-Cu is the copper peptide most associated with hair and scalp health. A 1% serum is a solid daily concentration for fuller looking hair.”

Dr. Andre Ellis, DO
Dermatology · Memphis, TN
License verified
★★★★★

“Patients want a topical they can use every night without a complicated routine. A single active dropper keeps it simple.”

Kelsey Ward, PA-C
Hair Restoration · Las Vegas, NV
License verified
★★★★★

“Clients see thicker looking hair when they stay consistent for three months. The scalp feel is light and clean.”

Dr. Seth Conway, MD
Dermatology · Boulder, CO
License verified
★★★★★

“Scalp health is the foundation for fuller looking hair. A nightly copper peptide serum supports that.”

Clinicians were paid a flat fee for their time reviewing this product. Their reviews reflect their own professional opinion.