Updated October 2026
To keep blonde hair from turning brassy, you need to do three things: cancel the yellow and orange tones, protect your hair from what brings them out, and refresh the tone before it fades too far. In practice, that means a purple shampoo once a week, gentle washing, heat and sun protection, and a toner or gloss every 6 to 8 weeks.
Brassiness is not a sign that your color went wrong. It happens to almost every blonde over time. This guide from the colorists at Capelli Salon explains why it happens and how to keep your blonde bright and clean between visits.
Why Does Blonde Hair Turn Brassy?
Every head of hair has warm pigment inside it. When your colorist lightens your hair, that pigment is lifted from dark to red, then orange, then yellow. A toner is then used to soften those warm tones into the shade you want.
Toner is not permanent. As it fades, the warm tones underneath start to show again. That warm, yellow or orange cast is what we call brass. Several everyday things speed it up:
- Washing often, especially with hot water or sulfate shampoos
- Sun, which fades toner and dries out lightened hair
- Hard water, whose minerals can build up and dull your color
- Chlorine from pools
- High heat from flat irons and curling irons
8 Ways to Keep Blonde Hair From Turning Brassy
1. Use purple shampoo once a week
Purple sits opposite yellow on the color wheel, so it cancels yellow tones. Use it once a week, or every few washes, and leave it on for a few minutes. Using it every day can make blonde look dull, gray or slightly lilac.
2. Try blue shampoo if your brass looks orange
Darker blondes and bronde shades often turn orange rather than yellow. Blue cancels orange, so a blue shampoo works better on these tones than purple.
3. Switch to a sulfate-free, color-safe shampoo
Strong cleansers strip toner fast. A gentle shampoo keeps your tone fresh for longer, and a good conditioner keeps lightened hair soft.
4. Wash less, and with cooler water
Every wash fades a little toner. Two or three washes a week is enough for most people. Finish with cool water instead of hot.
5. Protect your hair from heat
Always use a heat protectant and keep your tools on a medium setting. Lightened hair is more fragile, and high heat can push it toward yellow.
6. Cover up in the sun
Texas sun is tough on blonde hair. The American Academy of Dermatology suggests a wide-brimmed hat to protect color-treated hair. See their tips for healthier colored hair.
7. Prep before you swim
Wet your hair with clean water and add a little conditioner before you get in the pool. Dry hair soaks up chlorine much faster. Rinse and condition again as soon as you get out.
8. Book a toner or gloss between color visits
A quick toner or gloss every 6 to 8 weeks brings back the exact shade you left the salon with. It is the single best way to stay bright between full color appointments. Not sure which you need? Read toner vs gloss.
How to Use Purple Shampoo the Right Way
- Wet your hair and squeeze out the extra water.
- Apply the shampoo to the lightest parts first, often the ends and around your face.
- Leave it on for 2 to 5 minutes. Start short and add time if you need more toning.
- Rinse well, then follow with your usual conditioner.
If your blonde starts to look gray or purple, skip it for a few washes. The tint will rinse out.
When Brassiness Needs a Colorist
Home care can hold your tone, but it can’t fix everything. Book a visit if:
- Your hair looks orange even after blue or purple shampoo
- Your roots are much warmer than your ends
- Your blonde looks patchy after home toning
- Your ends feel dry, rough or stretchy
Sometimes the fix is a simple toner. Sometimes your hair needs a little more lift or a treatment first. Our colorists will tell you which before they start.
Blonde Care at Capelli Salon
From bright platinum to soft honey, our colorists plan your blonde and your tone together, then show you how to keep it. See our blonde specialist in Dallas or our blonding services in Frisco. Prefer a softer, low-maintenance blonde? Read how to make balayage last.
Frequently Asked Questions
How do I stop my blonde hair from turning yellow?
Use a purple shampoo about once a week, wash with a gentle shampoo and cooler water, protect your hair from heat and sun, and book a toner or gloss every 6 to 8 weeks.
How often should I use purple shampoo?
Once a week, or every few washes, is enough for most blondes. Using it every day can make blonde look dull, gray or lilac.
Should I use purple or blue shampoo?
Purple cancels yellow tones, so it suits light and platinum blondes. Blue cancels orange, so it suits darker blondes and bronde.
Why does my blonde turn orange?
Darker hair has more warm pigment. When toner fades, orange tones can show through. A blue shampoo helps, and a salon toner is the quickest fix.
How often should I tone blonde hair?
Most blondes look their best with a toner or gloss every 6 to 8 weeks, between full color appointments.
Does the sun make blonde hair brassy?
Yes. Sun fades toner and dries out lightened hair. Wear a hat in strong sun and use products with UV protection.
Related reading: Toner vs gloss · Balayage vs highlights · Gray coverage options
