Hello, Congratulations on your weight loss that is a major achievement. After a loss of around 70 pounds, excess skin in the neck is very common and is mainly due to loss of skin elasticity. Unfortunately, when there is true excess skin, non-surgical treatments such as radiofrequency, ultrasound, or skin-tightening devices have very limited effect. They may slightly improve skin quality, but they cannot remove or significantly tighten loose skin after major weight loss. In this situation, a neck lift is the only truly effective option to remove the extra skin and restore a defined, natural-looking neck and jawline. It provides a clear, long-lasting improvement that non-surgical treatments simply cannot match. A consultation would help confirm this, but based on your description, surgery would be the most reliable way to achieve the result you’re looking for. Warm regards,Op. Dr. Yücel Sarıaltın