DERMATOLOGIST TESTED WATER-ACTIVATED HYDRA-BOOST SERUM formulated with shea butter helps moisturize for up to two hours after shaving, helping keep legs smooth 5-CURVE SENSING BLADES with unique skin guards to smooth skin throughout every stroke, helping to reduce irritation while providing ultimate closeness for silky smooth skin WATERPROOF PACKAGING that protects blades until they're ready to use REFILL HOOK that allow women the convenience of hanging the blades in their shower