\n\nLUIS BIEN Blue Hair Care Serum  Natural Solution For Shipping and Losed  Hair\n\nThanks to its special content, Mavi Hair Care Serum helps prevent hair loss and regrow hair.\n\nHow to use?\nApply the Blue Serum to the desired area by massaging it in a circular motion.\nThen wait for it to penetrate the scalp.\nDo not wash your hair for a minimum of 1 hour.\nThese processes must be applied at least once every 2 days for an effective result.