Those who bleach their hair and live in hard water areas (which creates more mineral build-up on strands), should only use it once a week. Meaning, one bottle will last you until your next colour appointment, if not longer. Use a Dollop Every Third Wash: Once you're ready to use a full dose of purple shampoo, Capri says to start using a half-dollar sized dollop every third wash. "But if you have been in the sun or feel as if your tone is too brassy, use purple shampoo at every wash until you get the desired results, then use once every third wash," she explains. If, like me, you've dabbled in a blonde hair colour at some point or other, I'm sure you will know the continual struggle of preserving the high maintenance hue - after all, it's pretty common for bleached hair to go wrong (especially if you're DIY-ing). What you really need? A purple shampoo. Yep, unlike darker brown hair colours, blonde hair has an annoying tendency to fade and become brassy. Thankfully a toning purple shampoo can help prevent this. By switching your regular formula for one that caters to blondes, you'll totally transform your hair. Here's how... Why do I need a blonde shampoo? So when you wash with this particular shade of shampoo, it deposits purple pigment into blonde hair, to counteract any yellowy tones that start to shine through. What causes brassy hair?

While many hair care companies are infusing their products with toxic ingredients, the brand decided to formulate their products without any sulfates, and is certified as ZEROSULFATE®. Still unsure of where to start? Don't worry—we've got you covered. Below, the best purple shampoos to keep your shade of blonde hair bright. The Best Purple Shampoos I decant half my purple shampoo into half a bottle of Oribe Shampoo For Moisture Control," she says. This shampoo is marketed for people with blonde, gray, and highlighted hair, and boasts a strong color-depositing formula. Indeed, multiple reviewers write about how impressed they are with it, saying that they noticed a marked improvement in their hair color after just one wash. Because it’s so highly pigmented, the brand recommends using gloves when applying this shampoo to wet hair before lathering well and rinsing as thoroughly as possible. If you find that your hair is in even more need of anti-brassy TLC, repeat the process and leave the formula on for three to five minutes before rinsing. What Katie says: "This is the product I never knew I needed. The Olaplex system is the ultimate product range for protecting and caring for bleached hair. So the idea of a toning shampoo with the Olaplex technology inside is mind-blowingly exciting. It has become a must-have for me, as I use it alongside the rest of the range. I particularly like to use it straight after I've had my colour done when my hair is at its most vulnerable. If you're looking for a product that you can 100% rely on, this is that product."Always Test It First: Bodt always recommends that the first time you use a purple shampoo to mix it with a little of your regular shampoo to see how potent it is; you don't want to wind up with purple hair accidentally.

Hairstylist Kevin Kelly adds that purple shampoo is only really a good fit for people with light hair. "You cannot use purple shampoo on caramel highlights," he says. "It will not do anything. It’s not light enough for the color to grab on to." He also adds that purple shampoo works wonders "if your hair isn’t light enough or your hair was highlighted or colors in properly."The brand has a wide range of products to deal with many common hair issues. Products include the Pureology blonde shampoo, conditioners, leave-ins, hair masks, and more It's arguably blonde hair's biggest nemesis: brassiness. Why does it happen? "Lighter strands often struggle to look shiny and healthy," says Steve Shiel, scientific director at L’Oréal. "This is because free radicals in the colouring process break down protein so blonde hair becomes porous." Not only do the company’s products deliver accordingly, but they’re formulated ethically, avoiding animal testing and animal by-products, as well as unwanted sulfates and parabens. As with all hair products, there are an overwhelming number of purple shampoos on the market, making it hard to determine which one's right for you. Thus, I asked Ellis to break down the basics. Leave It On for 3-7 Minutes: Be aware of how long you leave a purple shampoo on each time, so you can figure out what will be the perfect timing for your hair and porosity. The more porous the hair, the more it will grab. Your first time, leave the formula on for the lowest amount of time the bottle recommends.

It all depends on the instructions on the specific bottle, but not overdoing it is key. "If you leave a purple shampoo on for too long, your hair will have a blue-purple tinge to it," Irwin cautions.

Strength Cure Shampoo

What Sunil says: "I was recommended this product by a beauty editor with many years of industry experience, so naturally I had to give it a go. IMHO it is THE very best purple shampoo on the market if you want that real shot of iciness. To get my hair blonde, it needs some serious bleaching, and suffice to say, it needs all the help and conditioning it can get. This instantly banishes any trace of brassiness. As long as I dye my hair blonde, there will be a bottle of this in my bathroom." If you can’t avoid it, coat the ends in conditioner first to create a hydrating base and to dilute the shampoo. Then apply your purple shampoo in an 's' shape on mid-lengths and work it in with your fingers to deposit the pigment evenly." For how long should you leave purple shampoo in?

What Sunil says: "A full believer in the restorative and transformative powers of Olaplex, after having recently gone blonde, I was thrilled when they launched this product. It doesn't leave my hair feeling dry - my hair ACTUALLY feels better after using - and the colour payoff is seriously impressive." The effect is softer, both in terms of the colour and how my hair feels afterwards. I wouldn’t recommend taking your purple shampoo right down to the ends. The hair there can be up to four years old so will grab onto too much of the purple pigment. But Zoe Irwin, creative director at John Frieda Salons, advises clients to be careful as purple-based products can be drying. As with any shampoo, you want to look for a high-quality one that is sulfate free," he says. "A good rule of thumb is that the lighter it is, the more subtle of a tone it’s going to be. The brighter the purple, the more drastic the results will be."So, next time you're in the middle of a hair disaster, consider grabbing a purple shampoo before you start to panic. But remember that purple shampoo is meant to be a temporary fix until your next dye appointment—not a permanent panacea. This Pureology Shampoo review found that they do not ship internationally, only within the US. What is Pureology’s Return Policy? The more you use purple shampoo, the more it makes your blonde look dull, because you are continuously depositing color shampoo," Kelly points out. So, while it's important to keep a bottle on hand, that doesn't mean you can eschew your hair appointments altogether. What To Look For in Purple Shampoo Alternate With Moisturizing Shampoo: Alternate your purple shampoo with a moisturizing shampoo," says Wiley. "Depending on how brassy your blonde hair is, you won’t need to use the toning effects every wash, and it is important to add moisture and strengthen hair during the color process to keep hair healthy and strong."