白头发越长越多？教你一招，养出乌黑秀发，减龄10岁

Core Viewpoint - The article emphasizes the growing concern over white hair among individuals, particularly in their 30s, and presents a natural hair care product, RUYI Black Hair Shampoo, as a solution to this issue. Group 1: Product Introduction - RUYI Black Hair Shampoo is formulated with plant extracts and does not contain harmful dyeing agents, making it safe for all users, including pregnant women [20][72][144] - The product includes traditional Chinese herbal ingredients such as He Shou Wu, black fungus, and ginseng, which are known for their nourishing properties [87][99][101] Group 2: Product Benefits - The shampoo claims to provide deep nourishment to hair follicles, promoting the growth of black hair and improving overall hair quality [26][90][97] - Users have reported visible improvements in hair color and texture after consistent use, with some experiencing new black hair growth from the roots [79][75][154] Group 3: Market Positioning - The product is competitively priced at 59 yuan for a 500ml bottle, with discounts available for bulk purchases, making it an attractive option for consumers [158][160] - The brand has invested significantly in research and development, employing over 70 top biologists and medical experts to ensure product efficacy [63][61] Group 4: Safety and Quality Assurance - The shampoo has passed rigorous safety tests and quality checks, ensuring it meets national standards for cosmetic products [151][153] - The pH level of the shampoo is neutral, indicating it is gentle on the scalp and hair, suitable for all ages [149][120]