Can I stay without the garment for two hours after washing it ? (in the 3rd week post op)

You should be fine. Our patients are required to wear a compression garment for the a few weeks following their #Gynecomastia surgery. The #compression garment helps to reduce the swelling, and the longer it is worn, the more quickly you will heal.We recommend it not be removed, at all, until the second or third day after the surgery. After that, we suggest they feel free to temporarily remove the #garment for showering or laundering only. We encourage our patients to maintain circumferential pressure for 4-6 weeks, but they may switch to an exercise compression garment when advised.

Thank you for sharing your question.  If you do not have a second garment to use in the interim you can stay without the garment while cleaning and drying it.  At 3 weeks you are well into the healing process and should not swell appreciably in that amount of time.  Hope this helps.