Shiitake Mushroom Extract is an adaptogenic mushroom known as the "Long Life Elixir". Sourced from the stalk of the plant, this extract is rich in anti-inflammatory lentinan and immune boosting pro-vitamin D2 This nutrient dense active also contains essential amino acids and trace elements Zinc, Magnesium, and Copper essential for overall skin health. This ingredient works by alerting the skin’s immune system to reinforce its natural defense system helping protect the skin from aggressors that lead to sensitivity and premature signs of aging.