... dying chemicals or some hair medications, it is better to massage on scalp for better absorption. But some medication is acid, to ... , lasting 20 - 40 minutes of usage3) 2 applicators included: cleaning brush, massaging head4) 2 hour fast charging5) Universal charger, fit for ... Individual gift box packageWarranty:1 year warranty Original supplier of Scalp Cleaning Brush, Head Massager + 100% QC checked