Single Process
&
Double Process Color

THE BEST HAIR SALON IN WESTCHESTER

NUMI HAIR SALON | SCARSDALE NY

Pink Single process haircolor

From Subtle to Statement

All-over color application for a fresh shade change, full gray coverage, or a subtle tone adjustment. Single process is the most straightforward color service we offer: one formula, one application, applied root to tip or as a root touch-up between full appointments.

Our colorists work with permanent, demi-permanent, and ammonia-free formulas (see below) depending on your hair’s condition and your color goals. Every appointment includes a consultation, application, processing time, shampoo, and blowout.

Single-Process Color

Starting At

$90-$110+

Starting At

$180+

Color Pricing Guide

Service Best For Price
Single process (all-over) Full shade change, gray coverage $90 - $110+
Root touch-up New growth only, maintenance $90+
Double process Dramatic changes, platinum, going 3+ shades lighter $200+
INOA ammonia-free color Sensitive scalps, gentler formula $110+
Glaze (add-on) Shine boost, tone refresh $55 - $65+

Pricing varies based on hair length, density, and formula. Your colorist will confirm pricing during your consultation.

What to Expect During Your Appointment

1. Consultation

Your colorist evaluates your hair, discusses your goals, and recommends the right formula and shade.

2. Color Application

Single formula applied all-over or to roots only. No foils needed. Processing takes 25 to 45 minutes.

3. Rinse + Condition

Color is rinsed, followed by a color-safe conditioner to lock in moisture and shine.

4. Blowout + Style

Your colorist evaluates your hair, discusses your goals, and recommends the right formula and shade.

Most single-process appointments take 60 to 90 minutes from start to finish. If you’re adding a glaze for extra shine and tone, add about 20 minutes.

Color Process Options.

Permanent Color

Full coverage that lifts and deposits pigment in one step. This is the go-to for gray coverage, darkening, or going up to two shades lighter. Results last until new growth comes in, typically 4 to 6 weeks for roots.

Demi-permanent color

A gentler option that deposits tone without lifting your natural pigment. Ideal for adding warmth, richness, or shine without a hard line of demarcation as it grows out. Fades gradually over 20 to 24 washes.

Root touch-up

Color applied to new growth only, blending your roots with the rest of your hair. Most clients come in every 4 to 6 weeks for root maintenance depending on how fast their hair grows and how much contrast there is between their natural color and their applied shade. Root touch-ups are faster and less expensive than a full all-over application, making them the most practical way to keep your color looking fresh between full services.

A two-step service that involves lightening the hair first, then applying a second color or toner on top. Double process is the right choice when you want to go significantly lighter than your natural base, achieve platinum or near-white results, or apply a vivid fashion color that requires pre-lightening to show up properly. Processing time is longer than a standard single process (typically 2 to 3 hours), and your colorist may recommend a bond-building treatment during the lightening step to protect the hair’s integrity. Consultation is recommended for all double process services so we can evaluate your starting color, hair condition, and the number of sessions needed to reach your goal safely.

Ammonia-Free Color: L'Oreal INOA

For clients with sensitive scalps or anyone who prefers a gentler formula, we offer L'Oreal INOA. It's a professional ammonia-free permanent color that delivers full gray coverage, vibrant tones, and up to 3 levels of lift without the harsh smell or scalp irritation. INOA uses an oil delivery system that leaves hair feeling softer after the service. Ask your colorist if INOA is right for you. Learn more about ammonia-free hair color

Finding the Right Color For You

Not sure whether single process is the right service? Here’s a quick guide.

Choose single process if: you want all-over color, gray coverage, a shade change darker or slightly lighter, or you want to refresh faded color. It’s the simplest, most affordable color service.

Consider balayage if you want natural, hand-painted dimension with low-maintenance grow-out. Great for clients who don’t want to commit to regular root touch-ups.

Consider full head highlights if you want all-over brightness with dimension and contrast. Highlights use foils to create defined ribbons of lighter color throughout.

If you want to understand the difference in more detail, our blog post on balayage vs highlights breaks it down side by side.

single process hair color application at Numi Hair Salon in Scarsdale NY

See What Our Clients Say About Numi Hair Salon

★★★★★

“My first time at Numi. Luma was my stylist for the color, cut, and blow-dry. She did a wonderful job, and I would highly recommend her for balayage. I did not have to wait at all when I arrived, and the staff was all very friendly.”

NICOLE W.
★★★★★

“I did my hair with Gabriel, he was very professional and assured me I’in good hands. I did a Keratin treatment. It was a great experience; I will go back. Highly recommended (I have very dry hair), my hair looks fabulous and feels nice and silky!!!”

MONICA L.
★★★★★

“Had such a great first-time experience at this salon yesterday. Everyone was very professional and welcoming. Luma did my color, and it came out beautifully. Gabriel had added curls to my hair, and overall, my hair looked amazing. I will recommend this salon to my friends and family.”

MICHELLE R.
★★★★★

“I am the type of person who cannot commit to one stylist or colorist. I like variety and trying different people to appreciate their vision and creativity. I have had appointments with the majority here and can honestly say that whoever you choose, you will not be disappointed! Not only do they all love what they do, but they also have fun doing it! Gabriel and his skilled team will not disappoint.”

LAURA C.
★★★★★

“Amazing place. They make you feel welcome and at ease. Ruben did my hair, and he did an amazing job. I just love it! I have found my new hair salon!”

SYLVIA J.

Book Your Color Appointment at Numi Hair

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Average Rating
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Best of Westchester
Top 100
Salon in the US

Frequently Asked Questions

Permanent single-process color lasts until it grows out, typically requiring a root touch-up every 4 to 6 weeks. Demi-permanent color fades gradually over 20 to 24 washes. How fast your color fades also depends on how often you wash your hair and whether you use sulfate-free shampoo.

Single process uses one formula in one step. Double process involves two separate steps, usually lightening the hair first with bleach and then toning it to the desired shade. Double process is required for dramatic lightening (for example, going from dark brown to platinum). Single process can lighten by up to two shades without bleach.

Yes. Many clients book a color and cut in the same appointment. Your stylist will typically apply color first, then cut and style after rinsing. Just let us know when you book your appointment so we can block enough time.

Yes. We use L’Oreal INOA, a professional ammonia-free permanent color line. INOA delivers full coverage, vibrant results, and up to 3 levels of lift without the harsh smell or scalp irritation that comes with traditional ammonia-based formulas.

Use a sulfate-free, color-safe shampoo and conditioner. Wash your hair less frequently if possible (every 2 to 3 days is ideal). Avoid hot water on your hair, as heat opens the cuticle and releases color. A glaze treatment between appointments can refresh your tone and add shine.

Schedule Your Appointment

Schedule your appointment today! Call us at 914-574-6402 or complete our appointment form below. To ensure the fastest booking time, please indicate who you would like to see. If you are flexible in times or have a specific time you are not available, please let us know. Thank you!

Please note that we will call or email you to confirm your appointment. Appointments are not officially scheduled until we confirm via phone or email.

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Numi Hair Salon
located at 69 Harney Road,
Scarsdale, NY.

We proudly serve clients from White Plains, Eastchester, Bronxville, Dobbs Ferry, Hartsdale, Ardsley, Tuckahoe, Larchmont, Mamaroneck, and throughout Westchester County.

HOURS OF OPERATION

Tues, Wed: 9 AM–6 PM
Thurs: 9 AM–8 PM
Friday: 9 AM–5 PM
Sunday: 9 AM–5 PM
Mon and Sat: Closed