Beauty Skincare Shoppers Say This $13 Bar Soap Turned Their Skin From Scaly to Smooth in a Week It works wonders on acne and seborrheic dermatitis. By Tess Garcia Tess Garcia Tess Garcia is a freelance journalist, certified yoga instructor, and contributing writer for InStyle. You can also find her discussing politics for Bustle, or exploring her Latinx heritage for Refinery29 and Teen Vogue. She hopes to bring a unique Gen Z perspective everywhere she goes. InStyle's editorial guidelines Published on February 28, 2021 @ 07:00AM Pin Share Tweet Email We independently research, test, review, and recommend the best products—learn more about our process. If you buy something through our links, we may earn a commission. Photo: Getty Images You might not realize it, but you're probably familiar with seborrheic dermatitis. The skin condition causes scaly patches and redness, and when it affects the scalp, it's referred to by its more common name: dandruff. Believe it or not, the culprit behind those itchy white flakes can also impact other areas of the body. According to Mayo Clinic, plenty of people experience symptoms on the back, chest, and even face, leading to a battle with uneven texture and inflammation. But thousands of people have found a solution to seborrheic dermatitis, cystic acne, and other skin issues in the Noble Formula Pyrithione Zinc Emu Bar Soap, a no-frills product that became an Amazon best-seller after a video preaching its benefits went viral on TikTok. In the clip, an esthetician explains that the soap completely erased the bumps on her forehead after one use. Sound too good to be true? Dermatologist Purvisha Patel, founder of Visha Skincare, explains that there's a science behind the soap's skin-clearing capabilities, and it all starts with zinc. "The typical [zinc bar soap] has been around for hundreds of years and even prescribed by dermatologists," she told InStyle. "The active ingredient in this formulation is zinc pyrithione, a potent antimicrobial agent that is successful against bacterial and fungal organisms." The soap also contains hydrating olive oil, anti-inflammatory emu oil, and milled oats, which serve as a gentle exfoliant. Courtesy Shop now: $13; amazon.com The soap has received over 2,000 perfect ratings on Amazon, with customers saying it "solved years of torment" from unsightly skin conditions. "I have been struggling with treating my seborrheic dermatitis for years," one reviewer wrote. "I came across this soap and OH MY GOD, my skin was silky smooth after just one use! I've been washing my face with it every day for a week and the scaly skin has not returned!" The Noble Formula soap is also effective for treating mild to severe acne, and since it's fragrance free, it can even work wonders on sensitive skin. "I cannot stress enough how wonderful this soap is," said another shopper, who struggles with flaky, irritated skin. "It's the only thing I can use on my super sensitive face…And one single bar lasts me six long months using it twice a day." Here's Why This $9 Dandruff Shampoo Is Going Viral on TikTok You can grab a bar of the miracle-working Noble Formula Pyrithione Zinc Emu Bar Soap for just $13 on Amazon.