Skip quats, if you can. Quats, short for quaternary ammonium compounds, often serve as surfactants or conditioners in baby shampoos. Quats pose a challenge for sustainable hair care: Few other ...

For me, the best part of a shower is gliding my hands through my freshly-conditioned hair. Once your shampoo has finished cleansing away dirt, the conditioner steps in to reintroduce some moisture.