For my patients, I have them wear the vest for 6 weeks. Best to check with your surgeon for your particular case. Good luck.
Each surgeon has his or her own postoperative regimen for compression garment wear after gynecomastia reduction. Most surgeons would recommend use of the compression garment for 4-6 weeks. The length of time will depend to some degree on the extent of the surgery. It is important that you follow the recommendations of the surgeon who has performed your surgery.