There are several methods to tighten the skin after weight loss: Regular Strength Training: Building muscle can improve body contours and provide some degree of firmness to the skin. Proper Nutrition: Consuming a balanced diet rich in vitamins and antioxidants can support skin health and promote collagen production. Nonsurgical Treatments: Laser therapy, radiofrequency, or ultrasound can stimulate collagen production and tighten loose skin. Surgical Procedures: In cases of significant excess skin, body contouring or skin removal surgeries may be considered.