Aveda’s new Color Conserve Foaming leave-in conditioner debuts this month. Executives said half of American women have color-treated hair. The 6.7-oz. lavender, ylang ylang, geranium, peppermint and grapefruit-scented conditioner contains UV-protective wintergreen oil and cinnamon bark, as well as strengthening quinoa protein and moisturizing plant emollients. As part of a three-step system, the leave-in conditioner joins Aveda’s Color Conserve shampoo and conditioner. It retails for $14.