When Will the Redness from Ear Otoplasty Go Away?

This is an excellent question and partially depends on how much pressure and what type of gear you are wearing. Part of the problem is that you ears may still be numb and it is difficult for you to assess when there is excessive detrimental pressure on the ear. I would consult your surgeon but...

Swelling is very common after ear surgery and at 4 weeks your scarring is still forming for an additional 2 weeks.

Judging from your multiple previous posts, I would highly recommend that you contact your original surgeon even if they are located at a distance or at least contact them by phone.You have previously described red, hard, firm raised, irregular scars. Tanning and excessive sun exposure can...

There is little evidence to support the effectiveness of scar gels.  However, some have proven to be harmful to healing of the incision.  In the face of a red, painful incision, I would seek immediate evaluation by your surgeon to rule out an infection or abnormal healing response.

Ear piercing should generally be safe by 6 weeks after ear pinning surgery (otoplasty) but you should discuss this with your surgeon.

It sounds like your surgeon placed absorbable sutures behind your ears, and most of them likely fell out by now. If there are a few remaining stitches that are bothering you, visit your surgeon and he'll remove the rest. I hope this is helpful for you.