Peter Thomas Roth Rose Stem Cell Bio-Repair Gel Mask ($45) is a rosy-colored gel mask that has excellent cooling effects and features stem cell technology, which are blended with rose extract to help reverse the signs of aging. Other ingredients include desert rose (for cell regeneration), damask rose (to tighten pores), rose commiphora (to combat redness), and pale rose (for the moisture barrier). To use: apply a generous coat of the gel onto clean skin, leave on for 10 minutes, and then rinse with warm water. In the summer months, it’s a good idea to refrigerate the mask or even leave it on overnight. I use this mask 2-3 times a week, and it’s great for sensitive skin.