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No matter your concern, the potent formula in this little black bottle is ready to tackle it.

3 cosmetic items overlapping on a beige background. From top to bottom black plastic bottle blue container with dropper…

Collage: Laneen Wells; Source images: Courtesy of brands

Apply it generously to your wet or dry scalp (or beard!)

Word to the wise: Arey works best on people with 0% and 30% gray hair.

On theproduct page, the site offers a handy chart to see where you land.

Arey To The Root Serum mini black pump bottle on light gray background

With daily use, you’re able to expect to see results at around 90 days.

The hardworking ingredients at play?

It’s a good fit for people who want to slow hair loss or promote future density.

Vegamour Gro-Ageless Anti-Gray Hair Serum gold dropper bottle on light grey background

It also adds shine and smoothness to strands, which is always a plus.

Apply it to wet hair two to three times a week post-shampoo and condition it as normal.

It won’t erase grays but will help with all the other aging hair pitfalls.

Living Proof Scalp Care Density Serum in branded soft blue bottle with white pipette on light gray background

You know, the one that helps you justify spending $40 or more on ablowout."

This shampoo is also distinctly non-drying, a key feature of treating mature hair.

Plus, it smells really freaking good.

Leonor Greyl Paris Serum Energisant glass bottle with yellow contents on light grey background

“They transfer these packets of pigment into the cells that ultimately become the hair shaft.”

With hair growth over time, however, the melanocytes produce less and less pigment, leading to grays.

“We know that stress can have physical effects, interfering with wound healing and promoting inflammation.

L’Oreal Paris Elvive 8 Second Wonder Water Lamellar Hair Treatment in branded amber bottle with applicator cap on light gray background

Can I reverse gray hair?

How should I choose a gray hair treatment?

“Additionally,regular oil treatmentsandhair masksare great ways to increase moisture.”

Oribe Silverati Shampoo in branded white bottle on light gray background

Dr. Gohara reminds readers to focus on prevention rather than reversal.

Testers considered performance across four primary categories: efficacy, texture and experience, fragrance, and packaging.

For more on what’s involved in our reporting, check out our completereviews process and methodology page.

Kérastase Paris Chronologiste Essential Revitalizing Shampoo on light gray background

Our staff and testers

A beauty product is a personal purchase.

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Hey Hair Root Revival Advanced Anti-Gray Hair Serum in branded white bottle with pump on light gray background