A color-protecting shampoo is designed to clean dyed hair while removing as little color as possible. No shampoo can stop fading altogether, because water itself lifts color. A well-chosen shampoo, used with sensible washing habits, can keep a shade looking fresh for noticeably longer.
The basis for this guide
This guide explains the features that distinguish shampoos for colored hair, using typical ingredient lists, label claims and dermatology advice on colored hair. It is not a ranking, and no specific shampoos were tested.
Why color fades
Dyed hair is more porous than untreated hair. Each time it is wet, the hair swells, the cuticle lifts, and some color molecules escape. Strong cleansers, hot water, heat styling and sunlight all speed this up. See How to Help Hair Color Last Longer.
What a color-protecting shampoo does differently
| Feature | How it helps |
|---|---|
| Mild surfactants | Remove dirt with less swelling and stripping |
| Slightly acidic pH | Helps the cuticle to lie flat, so that color stays in |
| Conditioning polymers and oils | Coat the hair and reduce friction |
| UV filters | Aim to reduce fading from sunlight |
| Antioxidants | Aim to limit color changes from oxidation |
| No harsh clarifying agents | Less color loss per wash |
Ingredients to look for
- Gentle cleansers: cocamidopropyl betaine, sodium cocoyl isethionate, sodium lauroyl methyl isethionate, glucosides.
- Conditioning agents: polyquaternium compounds, guar hydroxypropyltrimonium chloride, amodimethicone.
- Moisturizers: glycerin, panthenol, light oils.
- UV filters: for example ethylhexyl methoxycinnamate or benzophenone-4. Their benefit in a rinse-off product is modest, but they do no harm.
Ingredients to use with care
- Strong sulfates, such as sodium lauryl sulfate, high on the list. See Sulfate vs Sulfate-Free Shampoo: Key Differences.
- Clarifying or "deep cleansing" formulas. See Clarifying Shampoo vs Regular Shampoo: When Each Fits.
- Anti-dandruff actives. Some fade color faster. If you need one, alternate it with a color-safe shampoo.
- Salt (sodium chloride), which is sometimes avoided after keratin treatments. It matters less for color.
Understanding the claims
| Claim | What it means |
|---|---|
| "Color-safe", "for colored hair" | Formulated to be mild; not a regulated standard |
| "Sulfate-free" | Uses other cleansers; usually gentler |
| "Extends color for X washes" | Based on the maker's own testing |
| "UV protection" | Contains UV filters; not a substitute for a hat |
| "pH-balanced" | Close to the natural acidity of hair |
| "Color-depositing" | Contains pigment to refresh tone |
Toning shampoos
These are a separate tool. They add a little pigment to correct unwanted tones.
| Shampoo | Corrects | For |
|---|---|---|
| Purple | Yellow tones | Blonde, silver, gray, highlighted hair |
| Blue | Orange or brassy tones | Lightened brown hair |
| Green | Red tones | Dark brown hair |
| Red, copper or brown depositing | Fading | Matching shades |
Use toning shampoos about once a week, for the time stated. Overuse can tint porous hair, and dry it. See Bleached Hair Care: Washing and Conditioning Tips.
Choosing by hair situation
| Your hair | Look for |
|---|---|
| Freshly colored, any shade | Mild, color-safe shampoo; wait 48 to 72 hours before the first wash |
| Red and copper | The gentlest formula you can find; color-depositing products weekly |
| Blonde or bleached | Moisturizing color-safe shampoo; purple shampoo weekly |
| Dark shades | Color-safe shampoo; these fade most slowly |
| Fine, colored hair | A lightweight color-safe formula |
| Dry, colored hair | A creamy, moisturizing formula |
| Oily scalp with colored hair | Shampoo the scalp only; let lather rinse through lengths |
Washing habits matter as much as the bottle
- Wash less often, if your scalp allows it.
- Use lukewarm water, and finish cooler.
- Apply shampoo to the scalp, not the lengths.
- Condition every time.
- Protect hair from heat and sun.
See Color-Treated Hair: A Simple Care Routine for a full routine.
Do you really need a special shampoo?
Any gentle shampoo will be kinder to color than a harsh one. A product labeled for colored hair is a convenient way to find a mild, conditioning formula. If your current shampoo leaves your hair soft and your color lasts well, there is no need to change.
Signs your shampoo is fading your color
- The lather or rinse water is strongly tinted after the first few washes.
- Color looks dull within two weeks.
- Hair feels rough and tangled after washing.
Related on ArniSun
- How to Help Hair Color Last Longer
- Color-Treated Hair: A Simple Care Routine
- Sulfate vs Sulfate-Free Shampoo: Key Differences
- Clarifying Shampoo vs Regular Shampoo: When Each Fits
- Bleached Hair Care: Washing and Conditioning Tips
Sources and further reading
Frequently asked questions
Is sulfate-free shampoo necessary for colored hair?
It is not essential, but milder shampoos generally remove less color. Many color-safe shampoos are sulfate-free for that reason.
How often should I use purple shampoo?
About once a week. Using it more often can leave a lilac tint and dry the hair.
Can color-protecting shampoo stop my hair color fading?
It slows fading, but it cannot stop it. Washing less often, cooler water and protection from heat and sun also matter.