Hydréa London Bamboo & Loofah Exfoliating Back Strap (BLBS) Hydréa London Bamboo & Loofah Exfoliating Back Strap (BLBS) Provide your skin with an all-over cleansing, massaging and exfoliating treatment with the Hydréa London Bamboo & Loofah Exfoliating Back Strap, designed to reach those more difficult areas using ultra-soft bamboo fabric to leave your skin feeling smooth, healthy and beautifully radiant.