'Life changing': Over 30,000 Amazon shoppers rave about this purple hair mask — it's 40% off for Prime Day

Coloring your hair blonde or adding highlights is a fun way to brighten up your look. But it can come with some unfortunate side effects, like brassiness and straw-like strands, if you don't have the right tools to care for your hair. Luckily, Bold Uniq's popular Purple Hair Mask will combat yellow and orange tones in blonde and gray hair while conditioning it, too. Over 30,000 five-star fans on Amazon rave over it for its 'life-changing' abilities. Total bonus: It's on sale for Amazon's October Prime Day, called the Prime Early Access Sale.

This deal extravaganza is an opportunity for consumers to get a head start on holiday shopping, especially with inflation concerns, notes BlackFriday.com's shopping expert, Lisa Davis. You need to be an Amazon Prime member to take advantage of these deals. Here's how you can sign up for a free trial, which also gives you complimentary shipping.

Once you're all signed up for Prime, get ready to experience this incredible hair mask!

Bold Uniq Purple Hair Mask

$18$30Save $12

This hair mask promises to revitalize color-treated blonde, platinum, gray, or silver hair while removing brassiness and yellow tones.

$18 at BOLD UNIQ

Why purple? According to color theory, purple is known to help neutralize brassy and yellow tones in hair because it's a complementary color on the color wheel. The Bold Uniq Purple Hair Mask is specially formulated to perk up your blonde or grey hair in as little as one treatment. The end result? Gorgeous color that looks like you just left the salon.

At the same time, the mask infuses your hair with a hydrating treatment of natural oils without dulling out your color. It's also free of parabens and sulfates and enriched with soy protein and vitamin B5 to strengthen hair and repair damage.

Again, thousands of Amazon shoppers swear by this stuff. "I live on a farm and we have some very harsh water so my hair is in constant need of revitalization," a happy customer said. "I put this on my hair for five minutes and not only did it remove almost all of the brassiness and rust, but it also nourished my hair in the process instead of drying it out like other purple shampoos/masks that I have tried beforehand."

"Omg omg this mask is amazing," a fellow fan said. "After I rinsed it, I blow dried my hair and HOLY COW my hair was so much lighter. It literally looked like I got it professionally lifted. I mean, come on! I use it once a week religiously and have turned all my blonde friends onto this hair mask. It truly is life changing."

The reviews quoted above reflect the most recent versions at the time of publication.

See all of our Prime Early Access Sale coverage, here. Shop the top early Prime Day deals on Yahoo Life, get the best Prime Day tech advice on Engadget, learn about Prime Day trends on In the Know, and check out Prime Day car deals on Autoblog.