Blacklight Blonde Science's blue and violet toning formulas neutralize unwanted yellow and brassy tones, leaving blonde, gray, and silver hair looking cooler, brighter, and more refreshed.
Stephanie M. - Montreal, QC
“I’ve tried so many toning shampoos over the years, but Blacklight Blonde Science Blue Shampoo is on another level. It keeps my blonde bright, neutralizes brassiness beautifully, and leaves my hair feeling incredibly soft and healthy. You can really tell the formula is high quality — my color looks fresher and shinier after every wash. It’s officially a staple in my routine!”
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Blonde Hair Questions, Answered
Everything you need to know before you shop.
Each Jumbo Duo Set includes a full liter-size shampoo and conditioner from the same toning line, so you get a matched pair in a size built to last for months.
You save 20% off the regular price when you buy the liter-size shampoo and conditioner together as a duo, instead of purchasing each one on its own.
With regular use, a liter of shampoo and conditioner typically lasts several months, making these duos a great option if you want to stock up and avoid running out.
It depends on your hair's needs — our toning duos target brassy, dull, or discolored blonde tones, so pick the one whose description matches what you're seeing in your hair right now.
Yes, the Jumbo Duo Sets contain the exact same formulas as our standard sizes — just in a larger, more economical format.
Jumbo Duo Sets: Full-Size Shampoo & Conditioner, 20% Off
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Receive a free gift on orders $75+
EASY RETURNS
Not satisfied? Return your product within 30 days for a full refund. No questions asked.