Bigen Speedy is an ammonia-free hair color in Deep Chestnut (40) shade that provides quick and gentle hair coloring. This conditioning color formula from Japan's #1 brand features a gentle floral scent and promises speedy coverage in just 10 minutes. Key features: • Ammonia-free formula • 10-minute speedy coverage • Conditioning color treatment • Gentle floral scent • Made in Japan • Deep chestnut brown shade This hair color is manufactured by Hoyu, a leading Japanese hair care company. The product combines effective coloring with hair conditioning benefits, making it suitable for regular use. The ammonia-free formula makes it gentler on hair and scalp compared to traditional hair dyes. Always perform a patch test 48 hours before application and follow the instructions carefully for best results.