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The System — Science-Backed Grey Hair Treatment Duo

4.3
Rated 4.3 out of 5 stars
1,446 Reviews

Slows Greys | Supports Repigmentation | Improves Density

A supplement and serum grey hair treatment duo that addresses the early signs of aging hair. Clinically proven to slow grey growth, support repigmentation, and promote thicker, fuller hair in as little as 3-6 months with daily, consistent use in the early stages of greying.

A 1-month supply delivered every month.
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Original price: $103 Sale price: $87.55
save $15.45

Most Popular

A 3-month supply delivered every 3 months.
Free shipping. Pause or cancel anytime.

Original price: $300 Sale price: $240
$80/month
save $60

Best Value

A 6-month supply delivered every 6 months.
Free shipping. Pause or cancel anytime.

Original price: $600 Sale price: $450
$75/month
save $150

We recommend 3-6 months of consistent use to see results.

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Enhance and elevate your routine.

$100
value
Arey Scalp Brush on cream background showing the bristle side. The dark wood brush has metal nickel-plated bristles on a natural rubber cushion base, with the arey brand name on the handle. Product shot of Arey Mend hair treatment tube on a white/cream background. Label reads: arey® Mend. "A nourishing cream to moisturize and seal the cuticle with heat protection". All hair types. 60ml/2 fl oz. Gray cap with 'NOT TODAY' text on a white background

WHAT IS IT?

 

The System is our inside-out and outside-in regimen, pairing our physician-formulated daily supplement with a targeted scalp serum to address hair aging at its root. The serum is powered by our patented Mela-9® Complex, while the supplement combines targeted vitamins, minerals, and antioxidants that nourish from within.

Designed to fit seamlessly alongside most daily multivitamins and wellness routines, this easy ritual is flavorless, gentle, and has no aftertaste. Working in synergy, the two help slow grey hair growth, preserve natural pigment, support repigmentation, and promote thicker, fuller hair. Clinically proven to deliver visible results in 3–6 months with consistent daily use. Color-safe, dermatologist-tested, and hypoallergenic.

Heads up: Our packaging has been slightly updated. Please note that some images may show a previous version.

HOW TO USE

 

Not Today, Grey™
1. Take 2 capsules daily, preferably with food.
2. Expect visible results in 3–6 months with daily use.

To The Root® Scalp Serum
1. Apply daily to the scalp on wet or dry hair.
2. Part into sections and apply 1–3 pumps per targeted area.
3. Massage in; do not rinse. Let absorb, then style as usual.

Pro Tip: For full-scalp coverage, and to get our Mela-9® Complex into hard-to-reach areas, add Wash Shampoo.

CLINICAL RESULTS

 

After 6 months using The System:
88% saw fewer grey hairs.
13% decrease in grey hair growth vs. a 10% increase in the placebo group.
3× more participants experienced thicker, fuller hair with enhanced shine vs. placebo.

This is the largest and only clinical study focused on the appearance of grey hair to date. Results typically appear in 3–6 months with daily, consistent use.

Based on a 6-month, randomized, double-blind, placebo-controlled, study of the effects of The System on the appearance of grey hair on 173 subjects, ages 28–65, all less than 25% grey. Results determined by blinded clinical counting.

THE SCIENCE

 

Greys aren’t just genetic. It can be tied to other factors like oxidative stress, nutrient gaps, UV exposure, and environmental stress. The System addresses these drivers from two directions: the scalp serum, powered by the Mela-9® Complex, helps preserve pigment at the follicle, while the supplement’s proprietary blend supplies vitamins, minerals, and antioxidants to stimulate pigment from within. This inside-out approach works to sustain your natural color and healthy density over time.

QUALITY + CERTIFICATIONS

 

The System’s supplement component, Not Today, Grey™, is made in the USA in an NSF-certified, GMP-certified, and FDA-registered facility to ensure quality, safety, and consistency. Every batch is produced to meet the highest manufacturing standards and tested for purity and potency.

These certifications ensure the grey hair supplement you take daily meets strict safety and quality standards—so you can trust it to deliver the results you expect.

INGREDIENTS

 

Not Today, Grey Daily Supplement
Vitamin D (D3 Cholecalciferol), Vitamin B6 (Pyridoxine HCI), Folate, Vitamin B12 (Methylcobalmin), Biotin, Pantothenic Acid (D-Calcium Pantothenate), Calcium (Calcium Carbonate), Iron (Ferrous Fumarate), Selenium (Selenomethionine), Copper (Copper Gluconate)
Proprietary Blend: PABA (Para-Aminobenzoic Acid), Black Sesame Seed Extract, Fo-Ti Root.
Other Ingredients: Hypromellose, Rice Flour, Magnesium Stearate, Silica

Contains: Sesame

To The Root® Scalp Serum
Water (Aqua), Glycerin, Palmitoyl Tetrapeptide 20 Amide, Citrus Reticulata (Tangerine) Extract, Polygonum Multiflorum (Fo-Ti) Root Extract, Sesame Indicum (Sesame) Seed Extract, Biotin, Zanthoxylum Bungeanum Fruit Extract, Panax Ginseng Root Extract, Humulus Lupulus (Hops) Flower Extract, Panthenol, Glycine Soja (Soybean) Germ Extract, Hydrolyzed Barley Protein, Wasabia Japonica Leaf Extract, Caffeine, Coffea Arabica (Coffee) Seed Extract, 1,2-Hexanediol, Butylene Glycol, Hydroxyethylcellulose, Acetyl Tyrosine, Pentylene Glycol, Gluconolactone, Sodium Benzoate

Contains: Sesame
Free of: Sulfates, Parabens, Phthalates, Synthetic Fragrance, Polyethylene Glycol, Formaldehyde & Dyes

SHIPPING + RETURNS

 

Shipping
Free shipping on subscriptions and orders $100+ (US only). Orders ship within 7-10 business days, with tracking sent via email. Questions? Email hey@arey.com.

30-Day Money Back Guarantee (first orders)
Not right for you? You have 30 days from delivery to request a refund on your first order, no returns necessary. We'll refund each product, up to $113/order, less a $5 processing fee, to your original payment method. See full refund policy →

Returns + Refunds (all other orders)
For orders beyond your first, unopened, unused items can be returned within 15 days for a refund, less a $5 handling fee. We'll email you a prepaid label for US orders. Refunds process 5-7 business days after we receive your return. Contact hey@arey.com to start a return.

Arey works best on those who have 0-30% grey hair. Not sure what percentage you are?
4.3
Rated 4.3 out of 5 stars
1,446 Reviews

Proven Results

Results may vary

Clinically Proven to Reduce Grey Hair and Improve Hair Health

Results backed by a gold standard, double-blind, placebo-controlled clinical study

Graph showing hair growth statistics with percentages on a green background
Before and after comparison of hair growth over 24 weeks, showing a section of hair with a dotted line indicating measurement.
Before and after comparison of hair thickness with a focus on a rectangular section.
Bar graph comparing placebo and 'The System' for grey hair growth

Results based on a 6-month, randomized, double-blind, placebo-controlled study of the effects of The System on the appearance of grey hair on 173 subjects, ages 28-65, all less than 25% grey. Results determined by blinded clinical counting and/or clinical photo grading.

Why The System is Your Key to Less Grey, More Vibrant Hair

Not Today, Grey™

  • Absorb

    Vitamins B6 and B9 optimize body function, setting a foundation for Arey's other ingredients to take effect.
  • Create

    Vitamin B5 promotes cell turnover and Selenium builds a defense against free radicals.
  • Energize

    Vitamin B12 and the Chinese herb Fo Ti fuel Melanin production, while Iron supports the production of red blood cells.
  • Protect

    Paba, Vitamin D & Copper help to protect your natural hair from premature grey, while Vitamin B7 improves the protein structure of hair.
Not Today, Grey™

TO THE ROOT® SERUM

  • Stimulate

    A clinically efficacious peptide helps with repigmentation by stimulating the MC1-R (melanocortin 1 receptor).
  • Safeguard

    Antioxidants including Fo-Ti and sesame seed help reduce oxidative stress in the hair bulb.
  • Nourish

    Extracts from wasabi, ginseng, soybeans and hops provide nourishment to the roots and promote cell turnover to create healthier hair.
  • Volumize

    Pantothenic acid (B5), provides anti-inflammatory properties and is involved in activating the proliferation of cells in the skin barrier and also helps bind water to the skin, adding shine.
TO THE ROOT® SERUM

How to Use

The System addresses grey hair from the inside out and the outside in. 

How to use Not Today, Grey™ supplement
Not Today, Grey™ addresses grey hair from the inside-out.

HOW TO USE:
  • Taking two Not Today, Grey™ supplements each day supplies the body with the vitamins, minerals and antioxidants that support production of natural hair pigmentation at the cellular level.
  • Tip: Take the supplement after a meal, instead of on an empty stomach.
How to apply To The Root scalp serum
To The Root® utilizes a clinically effective peptide combined with powerful antioxidants to preserve natural hair color and help repigment greying strands.

HOW TO USE:
  • Apply on wet or dry hair.
  • Create a part, and pump the serum directly onto your scalp.
  • Apply 3-4 pumps to areas of concern 1-2 times per day.
  • You can also pump the serum onto your fingertips to get harder to reach areas.
  • Gently massage in.
  • Allow serum to absorb in for 10 minutes, then blow dry or let hair dry naturally.

Backed by Science, Trusted by Experts

Physician-formulated and tested in the world's first double-blind clinical study on greying hair.

Physician formulated, trichologist approved, dermatologist tested
  • DERMATOLOGIST TESTED

    “Arey represents a modern, science-driven approach to aging hair. The brand bridges dermatology and beauty—focusing not just on appearance, but on long-term health and function.”

    Dr. Hadley King, MD, FAAD
    Cosmetic and Medical Dermatology

  • SCIENTIST APPROVED

    “Arey’s System sets a new benchmark for clinical evidence in the beauty industry. This level of scientific rigor is what builds real trust in a product's claims.”

    Dr. Julian Sass, PhD
    Cosmetic Scientist

  • DERMATOLOGIST TESTED

    “Preventative care isn’t just for skin, it applies to hair too. Arey built a category around the early signs of hair aging, targeting those factors with a science-first approach to help maintain stronger, healthier-looking hair over time.”

    Dr. Mona Mislankar, MD, FAAD
    Dermatology

  • PHYSICIAN FORMULATED

    “It is encouraging to know that we can have a positive impact on greying and aging hair and that consumers, physicians, and hair stylists now have a choice in managing aging hair.”

    Dr. Kenneth Conrad MD
    FACP & Arey Chief Medical Advisor

  • PHYSICIAN APPROVED

    “Arey takes a preventative approach. It’s a product line rooted in science and clinical backing — something I respect as a physician and would recommend to patients who want to look and feel their best.”

    Dr. Damon Raskin MD
    Internal Medicine

  • OB/GYN APPROVED

    “What makes Arey different is the scientific focus and clinical rigor. Many supplements can disrupt hormones or aren’t clinically backed. Arey is thoughtful, clean, and rooted in research.”

    Dr. Shahin Ghadir MD, OB/GYN
    Reproductive Endocrinology + Infertility

  • CHEMIST APPROVED

    “What sets Arey apart is their commitment to rigorously testing the efficacy of their products. They don’t just talk about the science, but back it up through well-designed clinical trials and testing.”

    Valerie George
    Cosmetic Chemist

  • TRICHOLOGIST APPROVED

    “Our research represents a significant leap forward in addressing grey hair, blending our deep understanding of haircare with cutting-edge science.”

    Jay Small
    Arey Co-Founder & Trichologist

  • PURPOSE DRIVEN

    “What started as a personal journey to find a proactive solution for my aging hair with my hairstylist and now co-founder, Jay Small, has become a completely new category in haircare that we are proud to say is clinically validated.”

    Allison Conrad
    Arey Co-Founder & CEO

1 of 9
4.3
Rated 4.3 out of 5 stars
Based on 1,446 reviews
1,446 reviews
  • Jordan M.
    Verified Buyer
    Age Range 35 - 46
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Healthier scalp, Less new grey hair, Feeling more confident
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    23 hours ago
    Age Range 35 - 46
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Healthier scalp, Less new grey hair, Feeling more confident
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    Reviewing
    Not Today, Grey™
    Rated 5 out of 5 stars
    The sooner you start the better!

    Have been using this product for quite some time, and I think it's great for maintaining or even improving your hair color. My hair feels fuller too!

    Arey
    11 minutes ago

    Thank you for your wonderful review, Jordan! We're so glad to hear that you've been using Not Today, Grey™ for quite some time and that it's working great for maintaining and even improving your hair color. It's fantastic that you're also noticing your hair feeling fuller too! We really appreciate you being such a valued part of our community and for sharing your experience with us!

  • Daya D.
    Verified Buyer
    Age Range 35 - 46
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Less new grey hair, Feeling more confident, Improved texture, volume, shine
    How consistent are you with your usage? Daily
    How long have you been using the product? 6-11 months
    5 days ago
    Age Range 35 - 46
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Less new grey hair, Feeling more confident, Improved texture, volume, shine
    How consistent are you with your usage? Daily
    How long have you been using the product? 6-11 months
    Reviewing
    Not Today, Grey™
    Rated 5 out of 5 stars
    Great product, if used consistently!

    Great product, if used consistently! Improved the volume and health of my hair and i have found less greys!

    Arey
    10 minutes ago

    Thank you for your wonderful review, Daya! We're so glad to hear that you've been using Not Today, Grey consistently and that you're seeing such great results with improved volume and health of your hair, plus finding less greys! It's fantastic that you're committed to using the product regularly and noticing these benefits. We really appreciate you being such a valued part of our community and for sharing your experience with us!

  • Monique H.
    Verified Buyer
    1 week ago
    Reviewing
    To The Root® Scalp Serum
    Rated 5 out of 5 stars
    Seems to stimulate new hair growth

    If you continue to use consistently you will see results. It won’t diminish all gray hair, but it does lessen it.

  • Shantel S.
    Verified Buyer
    Age Range 25 - 34
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Visible repigmentation, Less new grey hair
    How consistent are you with your usage? Daily
    How long have you been using the product? 6-11 months
    1 week ago
    Age Range 25 - 34
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Visible repigmentation, Less new grey hair
    How consistent are you with your usage? Daily
    How long have you been using the product? 6-11 months
    Reviewing
    Not Today, Grey™
    Rated 5 out of 5 stars
    This really works

    I’m 30 and started getting more grey hairs. I’ve been taking this for at least 6 months now and I can literally see the pigment returning to the roots of the grey hairs. This is magic and really actually works. I started to see results after 3 months so consistency is key.

    Arey
    9 minutes ago

    Thank you for your wonderful review, Shantel! We're so thrilled to hear that you've been taking Not Today, Grey consistently for 6 months and that you're actually seeing the pigment returning to the roots of your grey hairs. It's amazing that you stuck with it and started noticing results after 3 months - you're absolutely right that consistency is key! We really appreciate you being such a valued part of our community and for sharing your experience with us!

  • Michelle F.
    Verified Buyer
    Age Range 47 - 56
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Healthier scalp, Less new grey hair, Improved texture, volume, shine, Visible repigmentation, Feeling more confident
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    1 week ago
    Age Range 47 - 56
    Percentage Grey 0%-10%
    What improvements have you noticed? (Optional) Healthier scalp, Less new grey hair, Improved texture, volume, shine, Visible repigmentation, Feeling more confident
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    Reviewing
    Not Today, Grey™
    Rated 5 out of 5 stars
    Staple in my haircare

    I have been taking this for years and have recently added the serum. I am 49 years old and have very dark brown/almost black hair. I do not dye my hair and love that I can support my natural pigment with Arey!

    Arey
    9 minutes ago

    Thank you for your wonderful review, Michelle! We're so thrilled to hear that Not Today, Grey has become such a staple in your haircare routine over the years, and that you've recently added the serum to your regimen. It's fantastic that you're loving the ability to support your natural pigment and keep your beautiful dark brown hair looking its best without dyeing it. We really appreciate you being such a valued part of our community and for sharing your experience with us!

Grey Hair Treatment FAQs

The System is our inside-out and outside-in approach to hair treatment for slowing and repigmenting grey hair.

It pairs Not Today, Grey, our daily grey hair supplement, with To The Root®, our topical hair density serum, to target greying at the root causes—oxidative stress, nutrient depletion, and pigment loss.

  • Not Today, Grey replenishes vitamins, minerals, and antioxidants that support healthy pigment production and new hair growth.
  • To The Root® delivers our patented Mela-9® Complex, a clinically validated blend of antioxidants and a peptide that helps slow and repigment greys while supporting thicker, fuller hair.

Consistent daily use of our hair treatment for grey hair is key, which is why we offer up to 25% off subscriptions to help you stay on track.

Results vary by individual. Early greys respond best to repigmentation, and many customers see noticeable darkening of new growth with consistent use. While The System can’t change fully depigmented white hair back to its original shade, it can significantly slow the progression of greying and help reverse grey hair by repigmenting strands in the early stages.

Yes. The System is backed by the largest and only clinical study to date focused on the appearance of grey hair.

In a 6-month, randomized, double-blind, placebo-controlled study of 173 participants (ages 28–65, all with less than 25% grey), The System showed significant results compared to placebo:

  • 88% saw fewer grey hairs
  • 13% decrease in grey hair growth vs. a 10% increase in the placebo group
  • 3× more participants experienced thicker, fuller hair with enhanced shine compared to placebo

Results typically appear within 3–6 months of daily, consistent use, and were determined through blinded clinical counting. The study has been accepted for publication in the Journal of Drugs in Dermatology (JDD).

Most people start noticing changes like healthier, shinier, fuller hair within 1–3 months of daily use. Visible changes in grey regrowth and repigmentation typically occur over 3–6+ months, depending on the percentage of grey hair, lifestyle factors, and consistency.

Greying is a progressive biological process, so if you stop taking Not Today, Grey™ or applying To The Root®, your hair will gradually return to its natural greying pattern over time. Think of The System like a skincare or wellness routine — consistency is key to maintaining results.

Yes. Not Today, Grey™ is made in the USA in an NSF-certified, GMP-certified, and FDA-registered facility. Every batch is tested for purity and potency, ensuring that the supplement you take daily meets the highest standards for quality, safety, and consistency. These certifications mean you can trust the ingredients and results.

Yes. All Arey grey hair products are vegan, cruelty-free, and gluten-free, and made without silicones, parabens, or synthetic dyes.

No! Unlike many scalp serums, To The Root® is completely oil-free. Once it dries, there’s no residue, buildup, or stickiness—just clean, lightweight roots. In fact, the formula can actually add volume at the root, making it easy to incorporate into your regular haircare or styling routine.

Yes. All Arey products are safe for all hair types and colors, including textured and color-treated hair. The System works by supporting the hair follicle and pigment cells, not by depositing color, so it’s universally compatible.

Absolutely. The System is color-safe and can actually help counteract some of the damage caused by chemical processing. Our antioxidant-rich formulas nourish your scalp and strands to support thicker, healthier hair over time.

Yes, and we encourage it. The System can be layered with your usual haircare and styling products. For best results, pair it with our Shower Duo (Wash Shampoo + Smooth Conditioner) to help preserve existing pigment and enhance softness, smoothness, and fullness.

We always recommend consulting your doctor before starting any new supplement while pregnant or breastfeeding. While the topical serum is generally considered safe for external use, the supplement contains vitamins and minerals, so it’s best to get personalized guidance from your healthcare provider.

No. The System does not contain any hair dye or colorants. It works by supporting your body’s natural pigment production, helping extend and restore your hair’s original color rather than covering greys.

Have other questions or need help?