Targeted nutritional supplements are an essential part of Dr. Perricone's 3-Tier Approach for a healthy body and beautiful skin. This perfectly dosed daily program of nutrients is especially designed to help support a healthy immune system and improve cognitive skills, while enhancing the look of the skin. Skin & Total Body supplements support bone and joint function, fight free radical damage and stimulate healthy growth of hair and nails. They also help diminish the appearance of fine lines and wrinkles and give skin a radiant and glowing appearance. It's the ideal cocktail of healthy skin vitamins.