I've had more than one esthetician say this to me. "Only use oil free products. Otherwise, you will trigger a rosacea flare. It's very bad to use products containing oil when you have rosacea." Is there any basis to this? I asked my dermatologist, and he had no idea what this was about. Rosacea isn't typically follicular in origin. But even for acne vulgaris, I would think that some oils are fine and "oil free" is more of a marketing buzzword. I'm no expert, but I was under the impression that some oils are not particularly comedogenic, whereas some agents that are not "oils" are. Anyone care to shed any light?