Beauty Shoppers Can't Believe How Fast Their Hair Grew With This Biotin and Collagen-Infused Shampoo and Conditioner Set The best part? It’s on sale at Amazon. By Eden Lichterman Eden Lichterman Instagram Twitter Eden Lichterman is an Amazon Ecommerce Writer for Meredith brands including InStyle and People. InStyle's editorial guidelines Published on September 15, 2021 @ 10:00PM 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: Courtesy If you've ever looked for a hair loss solution, you probably considered products with either biotin or collagen. These natural ingredients are known in the beauty world for promoting hair growth and improving the health of existing locks. Luckily, Amazon shoppers found a product duo that includes both of them. The Luseta Biotin and Collagen Shampoo and Conditioner Set has nearly 2,500 perfect ratings, and it's on sale. Board-certified dermatologist Dr. Debra Jaliman previously told InStyle, "Biotin helps nourish the hair follicles and stimulate the growth of existing hair." It can help with the production of keratin, which "is the protein that strengthens hair." Collagen also helps in that process, as it's a protein that contains amino acids, which your body uses to produce keratin. Together, these ingredients work to give you your healthiest and thickest hair yet. Courtesy Shop now: $25 (Originally $30), amazon.com The shampoo and conditioner set comes in two sizes — 16.9-ounce bottles and 33.8-ounce bottles — so you can try it out before committing to the larger size. In addition to biotin and collagen, both products have argan oil to repair damage and sunflower oil to moisturize your locks. They're also sulfate-free and safe to use on color-treated hair. The 18 Best Restorative Shampoos for Every Type of Hair Damage Hundreds of shoppers took to the reviews section to rave about the incredible results they saw after just a few washes. "I am 40 years old, in pre-menopause, and have colored my hair since I was 14," one began. "This last year, my hair became dry, brittle, was falling out, and [was] visibly unhealthy. Ordered this shampoo/conditioner on a whim, and it's amazing! I noticed results after the first use, but now after the fourth use, my hair's dryness and brittle ends have almost vanished. My hair is shiny, soft and there are no more clumps falling out when I brush." A second shopper added, "I am so happy I stumbled on this shampoo and conditioner set. I noticed a difference in one use. Each day that I use it, I notice even more results. My hair is fuller and stronger and staying where it belongs. Less and less hair ends up in my brush. I never thought it would work so quickly." It's not often you find a set of hair care products that are full of nourishing ingredients with glowing reviews at a sale price. Grab the Luseta Biotin and Collagen Shampoo and Conditioner Set at Amazon before the price goes back up. Courtesy Shop now: $51 (Originally $60), amazon.com Shop More InStyle-Approved Picks One Detail on This Under-$20 Amazon T-Shirt Gives It an “Elevated Look,” Shoppers Say Heidi Klum Just Made a Case for the Retro, ‘70s-Inspired Pants Jennifer Lopez Is Also Wearing Kate Hudson Uses the Reese Witherspoon-Approved Oil That Shoppers Say Recaptures the "Glow of Youth"