Origins Dr. Andrew Weil Mega-Mushroom Skin Relief Advanced Face Serum is a highly potent treatment is the heart of Dr. Weil's integrative approach. It features his proprietary blend of Hypsizygus ulmarius, Cordyceps and Reishi Mushrooms, Ginger, Turmeric and Holy Basil. And due to its lightweight liquid form it easily penetrates the skin's outermost layer. Use it twice daily and you'll soon see a renewed radiance and clarity. Your skin will look and feel calmer, healthier and less stressed. Best for sensitive, all skin types.