Biolage - Hydra Source - Shampoo - 400ml Treat dry hair to our ultimate moisture boost with Hydra Source shampoo. This potent formula allows you to boost hydration in dry, tired hair, delivering a soft, shiny, quenched look and feel. Hydra Source Shampoo is infused and micro-dosed with a concentrate of aloe vera and hyaluronic acid, calibrated down to the microgram to create the perfect amount of smoothness for soft, touchable strands.