Root Spray for Gray Hair: How It Works, How to Apply It and When Powder Is Better

Short answer: A root spray is temporary color in an aerosol. It coats the gray at your roots and part and washes out with your next shampoo. L'Oréal Paris says its Magic Root Cover Up dries in one minute and lasts until your next shampoo, and lists it in 9 shades. Clairol lists its Temporary Gray & Root Concealer Spray in Black, Dark Brown, Medium Brown, Light Brown, Dark to Medium Blonde and Auburn Red. A spray is fastest on a wide area like the part or crown. For the hairline, temples and fine partings, a powder gives more control.

How a root spray works

The pigment sits on the outside of the hair. There is no mixing, no developer and no processing time, so nothing changes inside the hair, and it washes out. L'Oréal Paris describes Magic Root Cover Up as ammonia-free and peroxide-free.

Two ranges, from the makers' own pages

Checked on 2 November 2026. Shades and stock change, so check the can you buy. Clairol also lists a 2in1 Color + Volume Spray that adds volume as it covers.

How to apply it without overspray

1. Start with dry, styled hair. Spray is the last step, not the first.
2. Shake the can well.
3. Hold your free hand or a tissue along the hairline to shield your forehead.
4. Spray in short, light passes at the distance on the can. L'Oréal Paris says 4 to 6 inches.
5. Build in layers instead of one heavy coat.
6. Let it dry fully before you touch or comb it. L'Oréal Paris says one minute.

When a powder works better

• The hairline and temples, where spray drifts onto skin.
• A fine part, where you want color only on the line.
• Travel, if you would rather not pack an aerosol.
• Quick fixes during the day, with a compact in your bag.

The side-by-side is in root cover powder vs spray vs root marker. For transfer onto pillows and collars, see does root powder stain clothes or pillowcases.

Picking the shade

Match the color right at your roots in daylight, not your ends, which are often lighter or faded. If you are between two shades of brown, the darker one usually hides more gray. On blonde or light hair, a lighter shade looks softer.

More: how to match your root cover shade.

Where does BUNEE fit?

BUNEE is a temporary root-cover powder in a pressed compact with a mirror and applicator puff. It comes in 12 shades: Black, Dark Brown, Medium Brown, Light Brown, Golden Brown, Auburn, Blonde, Medium Blonde, Light Blonde, Dark Grey, Grey and White. It washes out with shampoo and is not a dye. It is a powder, not a spray, so it suits the hairline, temples and part. Delivery is 10 to 17 business days.

FAQ

Does root spray cover gray hair?

Yes, temporarily. It coats the gray with color until your next shampoo. L'Oréal Paris and Clairol both sell root sprays made for gray roots.

How long does root spray last?

Until you wash your hair. L'Oréal Paris says its Magic Root Cover Up lasts until your next shampoo.

Root spray or root powder?

Spray is faster on a wide area. Powder gives more control at the hairline, temples and part. Both wash out.

Do I need a skin test for root spray?

Follow the can. L'Oréal Paris advises a strand test 48 hours before using Magic Root Cover Up.

Sources, checked 2 November 2026: L'Oréal Paris USA, Magic Root Cover Up · Clairol, Root Touch-Up range · BUNEE, shades and delivery. Brand names are used for comparison only. We have no business relationship with the companies mentioned, and facts about their products come from their own pages or retailer listings, not our testing.