I have ridiculously sensitive skin. Developed rosacea in my thirties and would flare up with external temperature changes, eating gluten, drinking wine, etc etc. Went to Dermalogica for a skin mapping and just general HELP and they got me on the Ultra-Calming line. I use the products religiously and honestly do not get nearly as many flare ups. If I know I am going to be outside in the cold for an extended period, I will put barrier repair on as a preventative and then after. I am a professional makeup artist and I use Barrier Repair on my actors as well. When doing live theater there can be a lot of on and off with makeup changes and that can really irritate skin. Barrier Repair is my go to to make sure actors' skin can handle the stresses we place on their skin.