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The System

4.3
Rated 4.3 out of 5 stars
1,318 Reviews

Slows Greys | Supports Repigmentation | Improves Density

A supplement and serum 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.

Not Today, Grey is just two pills a day. Flavorless without aftertaste and can be taken alongside most multivitamins*.

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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 a decrease in new grey hair growth.
13% decrease in grey hair growth vs. a 10% increase in the placebo group.
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. Up to 70% of greying is 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 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

Arey works best on those who have 0-30% grey hair. Not sure what percentage you are?

*We always recommend consulting with your doctor before you begin any supplementation.

4.3
Rated 4.3 out of 5 stars
1,318 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 hair from premature grey, while Vitamin B7 improves the protein structure of hair.

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.

How to Use

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

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 hair pigment at the cellular level.
  • Tip: Take the supplement after a meal, instead of on an empty stomach.
To The Root® utilizes a clinically effective peptide combined with powerful antioxidants to preserve hair’s natural 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.
4.3
Rated 4.3 out of 5 stars
Based on 1,318 reviews
1,318 reviews
  • Sandra G. P.
    Verified Buyer
    3 hours ago
    Reviewing
    To The Root® Scalp Serum
    Rated 5 out of 5 stars
    Fewer Greys. Healthier Hair.

    I've been using the serum consistently for a year and have noticed new hair growth around my temples, as well as fewer greys. I love that my hair looks healthier!

    Arey
    3 minutes ago

    Thank you for your wonderful review, Sandra! We're thrilled to hear that after a year of consistent use with To The Root Scalp Serum, you're seeing such fantastic results. Your dedication to consistency is exactly what makes the difference, and it's so rewarding to hear how the serum has transformed your hair health over time. A full year of commitment really shows the long-term benefits our formula can deliver. We appreciate you being a valued member of our community and look forward to continuing to provide you with exceptional haircare solutions tailored to your needs.

  • Kelsey C.
    Verified Buyer
    2 days ago
    Reviewing
    The System
    Rated 5 out of 5 stars
    Worthwhile tools for playing the long game

    Loves: The supplement helps me get in a lot of nutrients I know I don't get in my diet and wanted to take anyways. The spray serum is very easy to dispense and easy to take with me to the gym or while traveling, as it's small and doesn't leak or accidentally spray itself.

    Likes: This system is clinically proven to - at the very least - slow gray hair development. That is helping me trust the process and determine that this system is worthwhile for me. I'm about 2.5 months in so I haven't seen gray hair reversal, but I am accepting that I need to play the long game and am glad I started when I did (age 35, about 20% gray total and 40% by my temples).

    Dislikes: The spray doesn't seem very volumizing to me and can sometimes leave my hair looking flat. Applying it one spray at a time, as close to the scalp as possible, then rubbing it in before moving to a separate part of my hair has helped with that.

    Arey
    Yesterday

    Thank you for your wonderful review, Kelsey! We're thrilled to hear that you're loving the supplement for the added nutrients and finding the serum so convenient for your active lifestyle. It's fantastic that the clinical backing is helping you trust the process - you're absolutely right that this is about playing the long game. At 2.5 months in, you're still in the early stages, so consistency will be key for optimal results. Thanks for sharing that helpful tip about applying the serum one spray at a time close to the scalp - that's exactly the application method we recommend for best results. We appreciate you being a valued member of our community and look forward to continuing to provide you with exceptional haircare solutions tailored to your needs.

  • Sowjanya V.
    Verified Buyer
    Age Range 35 - 46
    What improvements have you noticed? (Optional) Less new grey hair
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    1 week ago
    Age Range 35 - 46
    What improvements have you noticed? (Optional) Less new grey hair
    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
    Helps with slowing down grey hair

    I’ve been using this since last one year and I’ve noticed results with consistent use.

    Arey
    Yesterday

    Thank you for your wonderful review, Sowjanya! We're thrilled to hear that Not Today, Grey is helping to slow down your grey hair and that you're seeing results with consistent use over the past year. Your dedication to consistency is exactly what makes the difference with our supplement - it's all about that long-term commitment for optimal results. We appreciate you being a valued member of our community and look forward to continuing to provide you with exceptional haircare solutions tailored to your needs.

  • Tyler S.
    Verified Buyer
    Age Range 25 - 34
    Percentage Grey 10%-20%
    What improvements have you noticed? (Optional) Improved texture, volume, shine
    How consistent are you with your usage? Daily
    How long have you been using the product? 2-3 months
    1 week ago
    Age Range 25 - 34
    Percentage Grey 10%-20%
    What improvements have you noticed? (Optional) Improved texture, volume, shine
    How consistent are you with your usage? Daily
    How long have you been using the product? 2-3 months
    Reviewing
    Not Today, Grey
    Rated 5 out of 5 stars
    Great product

    Love this supplement

    Arey
    1 week ago

    Thank you for your wonderful review, Tyler! We're so thrilled to hear that you love Not Today, Grey and that it's working well for you. We appreciate you being a valued member of our community and look forward to continuing to provide you with exceptional haircare solutions tailored to your needs.

  • Nadia P.
    Verified Buyer
    Age Range 35 - 46
    Percentage Grey 10%-20%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Less new grey hair
    How consistent are you with your usage? Daily
    How long have you been using the product? 1+ year
    2 weeks ago
    Age Range 35 - 46
    Percentage Grey 10%-20%
    What improvements have you noticed? (Optional) Improved texture, volume, shine, Less new grey hair
    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
    Be patient, takes time

    I have been using this for a year now and feel like I finally am visibly noticing results. I have not noticed any new greys for awhile and I feel like overall my hair feels and looks much healthier. Super easy to take 2 everyday along with the rest of my vitamins.

    Arey
    1 week ago

    Thank you for your wonderful review, Nadia! We're so thrilled to hear that after a year of consistent use, you're seeing visible results with Not Today, Grey. It's fantastic that you're not noticing any new greys and that your hair feels and looks much healthier overall. You're absolutely right that patience is key with our products, and we love hearing about the long-term benefits from dedicated customers like yourself. We're glad it fits easily into your daily vitamin routine too! We appreciate you being a valued member of our community and look forward to continuing to provide you with exceptional haircare solutions tailored to your needs.

FAQs

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

It pairs Not Today, Grey, our daily supplement, with To The Root®, our topical 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 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 repigment 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 a decrease in new grey hair growth
  • 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.

Not Today, Grey is physician-formulated and designed for daily use. Side effects are rare. Fewer than 0.01% of customers report mild effects such as digestive discomfort or headache. As with any supplement, individual responses can vary. If you are pregnant, nursing, have a medical condition, or are taking medications, we recommend consulting your healthcare provider before use.

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 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 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 dyes 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?