14 Hair Colour Terms to Know Before Your Next Salon Appointment

  • Hair transformations can be daunting, and choosing the right hair colour? Even more so.
  • Terms like “rooting,” “bronde,” and “balayage” can make deciding on a new look tricky.
  • We asked a professional hair colourist about the hair colour terms you should know before making your next appointment.

Making big hair decisions can be a very daunting experience. If you’re anything like us, hair changes outside of a standard trim can seriously make you reconsider departing from just a wash and style at the salon. Not only is it hard to imagine what the colour process will look like after your style is complete, but there are just so many terms to keep track of. (Like, seriously, what does “rooting” or “spongelights” mean?)

As intimidating as the task may be, thankfully, more salons are offering things like colour consultations, allowing you to physically sit in a chair to talk through what you may want to do for your next hairstyle. But if even that is too much work for you (no judgment, we get it), we asked L’Oréal Paris celebrity colourist and stylist at Meche Salon, Kari Hill, to break down some of the hair terms you should know before your next appointments.

Ahead, learn about single vs. double process colour and what “sombré” looks like directly from a pro. Gone are the days of choosing a look and just hoping for the best.

Getty / Rich Fury

Single-Process Color (aka Base Color)

Single-process hair colour is what you want to ask for at the salon if you want an all-over hue update. The hair is just one tone from scalp to ends. It’s also referred to as a base colour. For covering gray hair, a single-process is all you need.

Getty / Amy Sussman/SHJ2019

Double-Process Color

A double process is a base colour plus highlights. Make sure to book additional time at the salon if you want a two-step hair change, which looks more natural in the end. Double-process has gotten a bad reputation over the years, but it doesn’t have to be unhealthy for the hair when done by a professional.

Getty / Alberto E. Rodriguez

Highlights

“[Highlighting] is the act of lightening pieces of the hair with the use of colour or bleach and folding them into a foil to let the colour process,” celebrity hairstylist Clariss Rubenstein previously told POPSUGAR. “Typically, there is a structured pattern the colourist follows when applying highlights.”

Maria Elizabeth, hairstylist and owner of Salon deZEN, added: “Foil highlights start directly at the roots of the hair to create anywhere from lower contrasting highlights called babylights to highly dimensional hair colour. The amount of the contrast is visually created by taking larger or smaller sections and not just by making the hair itself lighter.”

Getty / James Devaney

Lowlights

Lowlights are the opposite of highlights. They are darker pieces of hair usually reserved for the layers underneath and around the neck. “If kids are out in the sun, the top of their heads get really light and the middle, back, and under are always darker because that part doesn’t see the sun,” said Hill. Lowlights can also be used if highlights have morphed into one solid colour over time. “I call it the buildup of highlights,” she said. “If you go every six to ten weeks, and get highlights over and over, eventually you will probably need some lowlights to break it up because things just get solid.”

Getty / JC Olivera

Babylights

“[Babylights] are placed around your hairline and on your part,” Hill told POPSUGAR. It doesn’t go too deep within your hair. “Just think subtle, delicate – and it’s good for fine hair.” Think of it as taking small pieces of hair and only highlighting the top half of it.

Getty / Neilson Barnard

Ponytail Highlights

If you like to wear a lot of updos, Hill recommended adding a few ponytail highlights near the nape of the neck and over the ears. “I think it’s good to keep some highlights around the whole perimeter of your head because it seems lighter without doing full, internal highlights,” she said. “When you lift [the hair] you have just the few highlights over the darkness, and it looks natural.”

Getty / Kevin Winter

Bronde

“Bronde” is what you call the hair colour in between brunette and blond. Hill described it as taking someone with dark blonde or light brown hair and adding a layer of highlights to lighten the overall colour.

Getty / Jon Kopaloff

Balayage

When you see the colourist at the chair next to you meticulously painting every strand of hair with bleach, that is balayage. In French, the word means sweeping or scanning. It’s just a myth that balayage always looks more natural than a foil highlight. “If [the colourist] is being heavy-handed, someone can end up with these chunks right on their hairline,” Hill said. “You shouldn’t be able to tell the difference between a good balayage and a good foil, in my opinion.”

Getty / Taylor Hill

Rooting

If your schedule won’t allow hair colour appointments every six weeks, ask your stylist to root your hair. “We do all the highlights, and then we put a gloss, or a toner, or a colour on the roots to tone it down,” Hill said. “It’s just something that takes away the contrast so it doesn’t look so bold or blatant in the regrowth. I like to compare it to smudging your eyeliner.”

Getty / Gregg DeGuire

Ombré

Ombré trends every summer when people want sun-kissed hair that is dark at the roots and lighter on the tips. The real beauty of it is how low maintenance the style is. “When it first came out the idea was to lighten up just the ends, and it looked natural because on a child hair goes from dark to light on a strand,” Hill said. “It’s like a beachy brunette, pretty and subtle.”

Getty / Edward Berthelot

Dip Dye

Dip dye is the most extreme form of ombré hair colour. There is a clear demarcation where one colour ends and the other begins. This high-contrast technique is definitely for the bold, and it looks fabulous with bright shades especially.

Getty / Amy Sussman

Sombré

Hill described sombré (subtle + ombré) as the marriage of typical ombré hair colour with babylights. There are some highlights near the roots, but the majority of the colour is still at the ends.

Getty / Gilbert Carrasquillo

Tortoiseshell

“[Tortoiseshell] is more highlighted than sombré, and it’s less ombré than ombré,” Hill said. “It basically adds more highlights to the top portion of the hair and it makes the ombré even more subtle.” The key to getting the tortoiseshell look on brunette hair is to ask for golden tones. Key words to use with your colorist are honey, caramel, and copper.

Getty / Jon Kopaloff

Spongelights

“Spongelights” are highlights with a sponge. It’s a new emerging trend that’s just barely started in salons, but pretty soon it will be the talked-about technique. “It’s a form of hair painting,” Hill said. “You apply colour with a sponge and it just touches the surface of that hair, so you’re not penetrating it.” The effect is sun-kissed, barely-there color.

Getty / Axelle/Bauer-Griffin

Oxidation

When your colour just doesn’t look as vibrant and it’s time for a touch-up, it’s probably the fault of oxidation. And blondes aren’t the only ones who get brassy. Oxidation can happen to brunettes and redheads, too. “People think it’s the sun that oxidises, but it’s just the elements: hard water in your faucet, shampoo, conditioner,” Hill said. “Permanent colour, in general, has an expiration date.”

At around four weeks when your hair colour starts to turn, book a toner, gloss, or buildup remover with your salon (and a conditioning treatment, too). At home, make sure to use a colour-correcting shampoo and conditioner – it’s not just for blondes. According to Hill, brunettes with ombré hair colour and highlights can go brassy, too. The goal is to stay nice and cool, like Margot Robbie pictured here.

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