19 days post-op rhinoplasty, is it okay to get 3rd Dermapen session in 2 weeks? (photo)

If your rhinoplasty surgeon has given you the "go ahead" I don't see any issue with undergoing the Dermapen treatment. I generally would recommend waiting approximately 4 weeks after rhinoplasty, however, to have any microneedling treatments. Also, I would recommend to avoid treating the nose with the microneedling device for at least 2-3 months postop.

Thanks for your question and photo.  There is no hard and fast rule on when to have a procedure on your nose after rhinoplasty and I would defer to the plastic surgeon treating you.  In general, I recommend avoiding any procedures to a surgical site until at least 4-6 weeks post operatively.  This timeframe can be longer depending on the surgery performed, the site of the surgery, and the intervention being performed.  I hope this helps and good luck.  

Your surgeon would know best based on your particular case and what was done in surgery.  Many of my patients ask this same question.  My usual answer is to wait for 8 weeks following the surgery before manipulating the skin on top of the nose.  This may seem like a long time, but I believe that manipulating the skin prior to 8 weeks can cause new swelling and prolong existing swelling after a rhinoplasty.