Back in July, I sat down with chemist, organic skincare founder and former rosacea and acne sufferer, Marie Veronique, and in-demand Bay-area facialist, Kristina Holey, to pick their brains for answers to my biggest skincare questions: Is candida linked to perioral dermatitis? Are some people predestined to develop rosacea? Does retinol thin your skin? Can you use retinol if you have rosacea or PD? Do lasers cause premature aging with consistent use? And more. The answers below will make you cringe and gasp as you recall everything you’ve done in opposition to this sage advice.   Marie: It’s interesting and timely you…