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 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." 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. 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." Use a Comb to Distribute: To ensure even distribution of your purple shampoo, make sure you use a wide-tooth comb to disperse the product in the shower.

But Zoe Irwin, creative director at John Frieda Salons, advises clients to be careful as purple-based products can be drying.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." 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? This porousness means bleached hair soaks up unwanted minerals and metals in your tap water and acquires a yellow tinge over time. "It also means that blonde hair absorbs light instead of reflecting it and is more prone to damage," adds Shiel. How to use purple shampoo In 2001, Pureology was founded in California, where they are still based to this day. The main mission of the brand is to create products that work wonders on color-treated hair. 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?

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. 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." 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®. 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. 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.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. As well as fortifying your strands, most blonde shampoos contain blue or purple pigments that give them their namesake colours. When you use them, they deposit these clever colour enhancing pigments and cancel out any warm, brassy tones, leaving your blonde as bright as it was when you walked out the salon. Not only will a decent blonde shampoo stop your hair from becoming brassy, but it also extends the shelf life of your colour, so you won't have to frequent the salon quite as often.

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. Before you left the hairdressers they will have applied a toner. These determine the tone of your blonde, e.g. golden or ash blonde. Over time, these shades have a tendency to turn orange and brassy. Certain things will make this more likely. Dunking your head in a chlorine-filled swimming pool, for example, or not wearing a hot on your summer holiday. Newsflash: whether you like it or not your beautiful blonde will begin to fade, but it's the shampoo you use day in, day out that will make the most difference. 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.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." 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. One of the comments about this product reads, “ Love this conditioner too just make sure you wash it all out or it will leave blue tones to your hair. Once a week paired with the shampoo is all you need to keep your hair looking great!” The company aims to make customers feel beautiful and feel good about it by creating products that don’t harm animals or the planet. This hair care brand is 100% vegan-friendly, allowing you to nourish your hair without compromise. I decant half my purple shampoo into half a bottle of Oribe Shampoo For Moisture Control," she says.