Skin Assistant Retinol Overnight Serum Retinol Overnight Repair Serum: This retinol oil serum aids in repairing skin and reducing the appearance of fine lines. Awake Renewed. Vitamin C Ageless Serum: This Vitamin C serum provides anti-aging benefits while reducing the appearance of fine lines. Illuminate dull, tired skin. Directions for use: after cleaning apply 1-2 pumps of serum to face, neck and décolletage.