Why Acidic Liquid Hair Color is a Must-Have

There is more to haircolor than picking a shade. The concept of acidity and alkalinity is essential when it comes to haircolor and hair strength.

Why is acidity and pH level important for my hair?

Without triggering flashbacks of your torturous high school chemistry class, pH is a scale used to measure how acidic or alkaline a substance is. It runs from zero to 14; zero through six is considered the acidic side of the spectrum, eight to 14 alkaline, with 7 being neutral. pH level—combined with protein and moisture—ultimately determine your hair’s health, strength, length, shape, and color. Not to mention that a more alkaline state can also affect the bacteria and oil (which we all have) on the scalp, and potentially cause dandruff.

What pH level should my hair be?

Hair is at its healthiest when it has a pH of 4.5-5.5, and is in a slightly acidic state. The bad news is that many of the things we do to our hair—chemical processes like bleaching and even shampooing—change its pH, making it more alkaline and potentially causing damage. The good news? Many products are focusing on the importance of maintaining healthy hair pH. Our backbar brand Oribe has had balanced pH as part of its DNA since it was founded.

Why should I be asking for acidic hair color?

It’s especially important to ask for acidic liquid demi-permanent hair color after a lightening service, such as highlights or balayage, since lightening the hair puts it in an alkaline state, with a pH of 10 or 11. This abrades the hair cuticle, strips the melanin, and breaks down the disulfide bonds that give hair its backbone and structure.

Following a lightening service with an acidic liquid demi-permanent gloss or toner helps to repair and condition the hair since it closes and smooths the cuticle. Not to mention that a closed hair cuticle also makes for incredible light reflection and hair shine.

What is the healthiest way to color my hair?

Whether you're looking to try a new hair color trend or color your hair for the first time, it's important to see a professional hair colorist that will maintain the health and integrity of your hair throughout the hair color process.