Say goodbye to the pain and discomfort of black toenails with the Poderm Strengthening Serum. This serum works mechanically to form a lipid film that instantly relieves pain. It reduces tension between the nail and the surrounding soft tissues while strengthening the nail. Recommended by podiatrists and dermatologists, this serum is highly emollient and suitable for adults, children over 3 years old, pregnant women, and people with diabetes. It fortifies your nails by forming a protective barrier.