Taiwan Hoyu is a cosmetics company specializing in hair dye products, including the CIELO and BIGEN brands. They offer products such as hair dye creams, hair color care masks, quick hair dye creams, and hair color touch-up brushes, with formulas designed for white hair coverage and scalp care. Their products are primarily made in Japan and include plant-based ingredients, multiple stylish color options, and formulations suitable for men, women, and individuals with sensitive skin. The company emphasizes safety by advising customers to perform a skin allergy test before use and provides extensive educational resources about the correct application steps and safety precautions. Taiwan Hoyu aims to provide quality hair dye products that cover white hair effectively while caring for hair and scalp health.