Eat your yogurt! That's the advice from dermatologists who have studied the link between probiotics and acne and rosacea. According to Whitney P. Bowe, MD, FAAD, oral probiotics, sold as daily supplements containing Lactobacilli and/or Bifidobacterium or in yogurts containing live cultures, could influence skin conditions such as acne and rosacea by affecting what is known as the “gut-brain-skin axis.” With this theory, stress alone or in combination with processed comfort foods that lack f...