88% of people had
less grey growth with
The System
Physician Formulated • Dermatologist Approved • Clinically Proven
2025 Haircare Brand of the Year
“Arey is changing the way we think about aging hair.”
Editor's Choice
Hair ages. We take care of it.
Our physician-formulated system is designed to address the key drivers of aging hair — from greying to thinning.
Slows Greys
The Arey® Compound helps support cellular production in the hair follicle by improving the production of enzymes and cell turnover.
Improves Shine
The Mela-9® Complex includes topical antioxidants that support disulfide bonds to smooth the cuticle in new hair growth.
Supports New Growth
A complex of B vitamins and minerals improve the hair growth cycle and decrease shedding.
Increases Volume
Panthenol helps retain moisture and elasticity while our oil-free formula won't weigh hair down.
Your scalp ages faster than your face.
You use skincare to prevent fine lines. What are you doing for your scalp and hair?
The First & Only Clinically Proven Solution for Greying Hair
88%
HAD LESS GREY HAIR GROWTH
3x
MORE PEOPLE SAW FULLER, THICKER HAIR WITH IMPROVED SHINE vs. placebo group
The System
Slows greys & supports repigmentation
Stimulates healthier, thicker, fuller, more youthful hair
Increases volume & shine
Free of oil and scent
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We recommend 3-6 months of consistent use to see results.
Not Today, Grey
Your foundation for long-term hair health. A clinically validated supplement that slows grey hair growth, supports repigmentation, and promotes thicker, fuller hair in as little as 3–6 months with daily, consistent use in the early stages of greying. Physician-formulated.
TO THE ROOT® SERUM
Designed to support long-term scalp and strand health while adding volume. Powered by our patented Mela-9® Complex—a science-backed blend of antioxidants and a clinically proven peptide—it helps preserve natural pigment at the source and nourish follicles for thicker, fuller hair. This non-greasy formula suits all hair types and won’t weigh down roots.
COLOR SAFE
PHYSICIAN FORMULATED
MADE IN A NSF CERTIFIED FACILITY
300,000+ ARE IN LOVE WITH THEIR RESULTS
Thousands of 5 Star Reviews
Better hair days ahead.
Months 1-3: Thicker, fuller hair
Months 3-6: Less grey growth; improved density, volume and shine
Months 6+: Compounding benefits with possible repigmentation
Not All Hair Supplements Are Created Equal
Arey is the first and only clinically proven solution for grey hair
TARGETS GREYS
CLINICALLY PROVEN
INSIDE + OUTSIDE SUPPORT
DESIGNED FOR LONG-TERM USE
PHYSICIAN FORMULATED
Generic Hair Vitamins
Backed by Science, Trusted by Experts
Physician-formulated and validated in the world's largest clinical study on greying hair.
Frequently Asked Questions
How does The System work?
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.
Is the supplement in The System tested for quality and safety?
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.
Is it safe to use on color-treated hair?
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.
Will To The Root® make my hair greasy or weigh it down?
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.
When will I start to see results?
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.
Can The System reverse greys completely?
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.
What happens if I stop using The System?
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.