The Elizavecca Cer-100 Collagen Coating Hair Protein Treatment, Amazon's No.1 best-selling deep hair conditioner, has been recommended by certified trichologist and viral TikToker Abbey Yung. The mask, which has more than 49,000 five-star ratings and was purchased more than 30,000 times in the last month, was found to significantly improve hair quality and revitalize it. Despite initially being skeptical about the product's effectiveness, Yung found the product and applied it in sections and quickly and easily. After leaving it in for a few minutes and rinsing it out like normal, she noticed a difference in her hair's texture.