Glow Tonic Serum This lightweight serum gently exfoliates, hydrates and nourishes. It softens, refines and restores radiance for smooth and balanced skin. Massage 2-3 drops onto cleansed, toned skin before moisturizer. CAUTION: Use only as directed. Avoid contact with the eyes. If irritation persists, discontinue use and consult a physician. It is recommended that prior to exposure to the sun, users cover areas where AHAs have been applied with sunscreen. Contact of the product with the skin must be of limited frequency or duration.