Shan Pai Xiyi Zao (Fan Brand Laundry Soap) 扇牌洗衣皂 2片
Fan Laundry Soap is the most authentic of vintage soaps available and comes from a long-held tradition of soap-making. Still made in Shanghai, people keep it alongside an old-fashioned grater, grating up just the right amount of soap for each laundry.
The scent used to perfume it is lemongrass and lemon fragrance. Good for prewash and hand wash and particularly good for white fabric.