How to Choose Your Hair Extension Shade
Updated 2026-10-02. By Devan, hair extension specialist.
Match your extensions to the mid-lengths and ends of your hair, not the roots, in natural daylight. If you are between two shades, choose the lighter one or a blended shade such as a balayage or piano highlight. The easiest way is a free color match: send 3 daylight photos or visit the studio.
What is the single most important rule for matching?
Match the mid-lengths and ends, not the roots. The extensions hang below your natural color through the lengths and ends, so that is the part people see and the part your hair must blend into. Matching the darker roots is the most common mistake, and it makes the extensions look like a heavy band.
Part your hair as you normally wear it and look at it in daylight, not under bathroom lights. Indoor lighting adds warmth or a green cast that can send you a shade or two in the wrong direction.
What photos should I send for a color match?
Send three photos in daylight near a window, with no filter and no strong shadows.
- The back of your hair, loose and dry, in daylight
- The ends held flat against a sheet of white paper so the color reads true
- Your face with your hair down, so the root to end blend is visible
When should I choose a blended shade?
If your hair has highlights, balayage or grown-out color, one flat shade can look like a line. Blended shades such as P4/27 or P18/613 mix two tones in each piece so they disappear into dimensional hair.
A blend also gives you more room to be slightly off, because the eye reads the overall color rather than one block. For a single tone look, one flat shade is simpler and cheaper.
How do undertones affect the match?
Undertone is the warmth or coolness under your color, and it matters as much as the level. A warm honey blonde on cool ash hair can look yellow, and a cool ash blonde on warm gold hair can look grey or dull.
Look at your hair in daylight next to a plain white wall. If it reads slightly gold or copper, you have a warm undertone and should lean warm. If it reads ashy or neutral, choose a cool or neutral shade. When in doubt, a neutral or blended shade is the safest choice.
How do I match balayage or highlights?
Balayage and highlights are not one color, so match the lightest tone you have and let the base blend on its own. Buying a shade that matches your brightest highlight keeps the extension pieces from standing out against the light sections.
If your highlight has two clear tones, a piano highlight or balayage shade with the same two tones is usually the closest match. Send a photo of your ends in daylight and Devan will pick the closest blend.
What if I am between two shades?
Choose the lighter of the two, because extensions sit under the mid-lengths and darker hair will show as a band. If you are still unsure, order one pack of each and compare in daylight before committing to a full head, or let a free color match decide for you.
Never darken a shade by guessing. It is far easier to add depth with a toner than to lighten extensions, which weakens the hair.
Can extensions be toned or colored?
Human hair can be toned darker by a professional. Lightening extensions is not recommended because it weakens the hair and shortens its life, so always start from the lightest shade you need and go darker if required.
If your own color is going to change soon, wait until after the color service before the final match, so the extensions are ordered to the new color and not the old one.
Does a color match cost anything and how long does it take?
Color matching is free. Send up to three daylight photos through Match my color or text them to (510) 491 9651, and Devan confirms your shade before any hair is ordered. You can also book an in-person match at the North San Jose studio.
A photo match usually comes back the same day. If your hair is very dimensional or you are switching between light and dark, an in-person match is worth the trip because the hair and the lighting can be compared directly.
Questions
Should extensions match my roots?
No. Match the mid-lengths and ends, because that is where the extensions sit and show. Matching the roots makes the extensions look like a band.
What if my color changes after I buy?
Unopened packs with the seal intact can be exchanged within 14 days.
Is a color match really free?
Yes. Send daylight photos through Match my color or book an in-person match at the North San Jose studio, and there is no charge.
Can I wear a lighter shade than my own hair?
You can, as long as it is close to your lightest highlight. Going several levels lighter than your natural color will show at the root and look like a separate band.
Do you match grey or silver hair?
Yes. Silver grey and platinum blends are available, and a blended shade usually looks more natural than one flat silver tone.