Soothing shampoo for sensitive scalp Z. One Concept Simply Zen Calming Shampoo 1000 ml — Hair treatmentOne Concept Simply Zen Calming in 1000 ml, formulated specifically for sensitive scalp.CharacteristicsHairSoothing formulaDirections for useDistribute through the hair as needed and proceed with your usual styling or washing routine.Ideal forChi seeking well-groomed hair with professional formulas.