Digestive health plays an important role in how skin appears on the surface. When digestion is not working optimally, it allows toxins to be reabsorbed in the body instead of being eliminated. The body then mounts a state of emergency as it's overwhelmed by toxins, some of them bad bacteria. These manifest directly on the surface for all the world to see, in the form of wrinkles, blotchiness, skin rashes, and acne.

This is where probiotics come into play. Probiotics contain potentially beneficial bacteria found in the digestive tract--what some call good gut bacteria. They help strengthen the digestive system but they also play an important role in skin health. Probiotics consist of Lactobacillus acidophilus, Lactobacillus bulgaricus, and Bifidobacterium bifidum. They have anti-inflammatory, anti-pathogenic, and antiallergenic properties and can be used prophylactically and therapeutically. 

There have been many studies showing benefits of probiotics to skin health. For example, there's a correlation between an imbalance of good and bad bacteria and the onset of acne. When bringing natural bacteria back into balance with a probiotic intervention, acne improves, in some studies, as much as 50 percent of the time.

There is no recommended daily intake for probiotics, but good food sources include buttermilk, kefir, miso, tempeh, yogurt, and other fermented foods. Supplements are generally higher in potency and are used for therapeutic purposes in treating irritable bowel syndrome, Crohn's disease, colitis, and many other conditions.

While probiotics are essential for healthy skin and digestive health, there are many other appealing benefits to encourage their use, such as strengthening the immune system, replacing good bacteria after a course of antibiotics, and contributing to general health and well-being.

One note: Some probiotic supplements come from dairy sources and may not be suitable for individuals with dairy allergies or sensitivities.