Beauty Hair I’ve Used This $13 Purple Shampoo for 4 Years, and It’s Kept My Hair the Perfect Shade of Platinum It came highly recommended by my hairstylist. By Olivia Hanson Olivia Hanson Olivia Hanson is a NYC-based editor and writer. She covers all things beauty and celebrities. InStyle's editorial guidelines Published on January 30, 2023 @ 06:00PM Pin Share Tweet Email We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation. Learn more. Photo: Jeremy Moeller/Getty Images Whether you have a full head of blonde hair or just highlights, you know that ‘ick’ feeling you get when your strands start to go brass-y. But as someone who considers herself a platinum blonde at heart (I have naturally brunette hair), I turn to purple shampoo to keep my golden strands in-tact. So, I’ll let you in on my favorite one — we don’t gatekeep here: The Kristin Ess the One Purple Shampoo has kept my brown-turned-blonde hair the perfect shade of platinum for over four years now. And the best part? I don’t have to break the bank to get it. It normally retails for $16, but right now, it’s 17 percent off on Amazon. Amazon Shop now: $13 (Originally $16); amazon.com Created by celebrity hairstylist Kristen Ess, the blonde shampoo was designed to tone, cleanse, condition, and restore shine to blonde and brunette hair.It has an ultra-violet pigment that’s meant to be buildable, meaning if you want more neutral tones, only use it when you start to notice brassiness, but if you have violet or ashier tones, use it as much as you want. The formula is also sulfate-free, paraben-free, and safe to use with keratin treatments. A recommendation from my hairstylist at Valor & Violet in Ames, Iowa, I was eager to try it after a long bout with several lackluster purple shampoos. Typically, she recommends in-salon products, but not this purple shampoo; she told me that Kristen Ess is an incredible drugstore brand, so on my way home from the appointment, I stopped at Target to pick it up. I’ve been using it ever since. For extra context, my hair color is naturally a light shade of brunette, which I dye blonde every few months. It takes only one use of the shampoo to take my brassy, yellow-tone hair and neutralize it to become the perfect shade of cool blonde. On top of that, it leaves my hair shiny and moisturized. InStyle / Olivia Hanson To use, apply about a quarter-size amount, depending on the thickness of your hair. I mix it with my regular shampoo (the Dae Hair Signature Shampoo), lather it evenly throughout the hair, and leave it in for about 10 minutes before washing it out. How often you use it really depends on how platinum you want your hair to be. With previous purple shampoos, I’d have to use it at least once a week, but with this one, I only need to use it about every two to three weeks to keep my hair consistently platinum. Note: If you use it too much, you will start to see shades of violet, especially on particularly light shades of hair. If you’re looking for a quality, go-to purple shampoo that won’t break the bank, check out Kristin Ess’ the One Purple Shampoo on Amazon right now while it’s on sale. Shop More InStyle-Approved Picks I’ve Used This $14 Detangling Conditioner for Over 10 Years to Keep My Curls Soft and Hydrated Shoppers Say This Primer Spray Makes Their Makeup Last “All Day” — and It's 50% Off for Just 24 Hours Angelina Jolie and Gwyneth Paltrow Use This Soothing French Skincare Brand — and It’s 20% Off Right Now