Don't be "negligent!"
Most all our serums can also be used on the lips and on the upper eyelids, areas that can show age but get little treatment attention. The one exception would be our Phloretin Serum, which should not be used on lips/mucous membranes. Remember to also treat your neck, back of neck, and hands. Those areas tend to be neglected as well, and are usually quite sun-damaged.