What should I do if I'm underweight and have loose skin?

It is recommended that thin individuals with loose skin maintain a balanced diet and increase protein intake to promote the recovery of skin elasticity. Consider using skincare products containing collagen or hyaluronic acid, perform regular skin-firming massages, and avoid excessive sun exposure. For severe skin laxity, treatments such as laser therapy or microneedling may be considered, as they can effectively stimulate collagen regeneration and improve skin tightness. Always proceed under the guidance of a qualified medical professional.