Strengthens the skin's barrier function to resist external aggressors and delay the signs of aging. Our serum strengthens the skin's barrier function by up to 45%* and increases its resistance to environmental aggressors, free radicals, and stress. The result is una Younger skin, longer. Our new and improved anti-aging serum is formulated with plant-derived ingredients to improve the appearance of signs of aging, reducing the appearance of fine lines and wrinkles and improving skin texture, tone, and radiance.