Sisley enters the dermocosmetic market this month with the launch of Sensitive Skin Soothing Care. It promises to soothe skin and enable users to apply other products for a more expansive routine. For example, retinoids are effective anti-aging ingredients. But they are known skin irritants. Sensitive Skin Soothing Care should find an eager audience. More than 60% of women and 50% of men already suffer from sensitive skin, according to “The Prevalence of Sensitive Skin,” a study by Miranda A....