Over time, many factors contribute to changes in our hair, nails, and skin. Dietary, environmental, genetic, and lifestyle factors all contribute to our physical appearance and well-being by affecting the pigmentation, elasticity, hydration, thickness, and fullness of the hair, skin, and nails. Our outward appearance is a reflection of our internal cellular and metabolic health. Dietary supplementation using specific, scientifically studied nutrients can help support our appearance as we age. AAI Rejuvenation Clinic and Douglas Laboratories are committed to staying at the forefront of new research where the science of supplementation and beauty intersect.