Peekaboo and Hidden Underlights

Published December 20, 2025

The under-layer color that hides at work and reveals a flash of bold when you let your hair down.

What Peekaboo Color Is

Peekaboo color, also called underlights, places bold or contrasting color on the underneath layer of your hair. When your hair is down, the top layer covers it and your color looks natural; when you move, tie it up, or part it, the hidden shade peeks through. It is the best of both worlds, letting you experiment with vivid or fashion colors without committing your whole head. This makes it ideal for anyone with a workplace or lifestyle that limits visible bold color.

Who It's Perfect For

Peekaboos suit people who crave bold color but need flexibility, like those in conservative jobs or anyone nervous about a full transformation. They are also great for testing a fantasy shade before going all in, since the commitment is low and the placement is forgiving. Long and medium hair show underlights best because there is more length to reveal. If you have very short hair, the hidden layer can be harder to conceal, so placement needs more care.

Choosing Your Hidden Shade

Almost any color works as a peekaboo, from vivid fantasy tones to subtle natural contrasts. Bold choices like burgundy, copper, cherry, or pastel pink create a dramatic flash against a darker top layer. For a softer effect, a few shades lighter or warmer than your base gives a sun-kissed peek rather than a statement. Preview the contrast on your selfie in GlowMaxing so you can see how loud or subtle the hidden layer reads against your natural color.

The Placement Matters

Where the colorist places the underlights determines how hidden or visible they are. A classic peekaboo sits low underneath, revealed only when hair moves, while a higher placement around the part or face shows more often. Money-piece-style hidden color around the face frames the look when tucked behind the ears. Talk through how visible you want it, since the same color reads completely differently depending on placement.

Application and Lifting

Fantasy underlight shades usually require the hidden layer to be pre-lightened so the color shows true. Because only the under-layer is processed, the top stays healthy and your overall damage is minimal. Vivid direct dyes sit on top of lightened hair and refresh easily at home. If you are going from dark hair, expect a lightening step first, and ask for a bond builder to protect those under-strands.

Maintenance and Refreshing

Vivid peekaboo colors fade like any fashion shade, but because the layer is small, refreshing is quick and cheap. A color-depositing conditioner or direct dye in your shade, applied just to the under-layer at home, keeps it vivid. Cool water and sulfate-free shampoo slow the fade. Since the bold color is hidden, slightly faded underlights still look intentional, so upkeep is genuinely low-pressure.

Styling to Reveal It

Half of the fun is styling to show the color off. High and low ponytails, buns, half-up styles, and braids all expose the underlayer dramatically. A deep side part or tucking one side behind the ear gives a subtler flash. Curls and waves let the hidden color peek through with movement, while sleek straight hair conceals it almost completely until you choose to reveal it.