How Well Do Blepharoplasty Scars Heal?

4 weeks after Blepharoplasty is way too soon to be worried. These types of incisions almost always heal well. Be careful with the sun and allow at least 10-12 more weeks before you worry!
In the meantime, you could also use a topical silicone based scar gel to help accelerate the healing. 
Hope that helps.

Hello! Thank you for the question! Blepharoplasty to ncisions, when well-placed, should brim perceptible once fully healed.  It is common for scars to fully mature for up to a year. In the meantime, there are a few things that may help to ameliorate your incision/scar. The most proven (as well as cheapest) modality is simple scar massage. Applying pressure and massaging the well-healed scar has been shown to improve the appearance as it breaks up the scar tissue, hopefully producing the finest scar as possible. Other things that have been shown to add some benefit, albeit controversial, are silicone sheets, hydration, and topical steroids. In addition, avoidance of direct sunlight to the incision will significantly help the appearance as they tend to discolor with UV light during the healing process. If unsightly scars are still present after approximately a year's time, other things that your surgeon may consider are intralesional steroid injections, laser, or just surgical revision of the scar itself.Hope that this helps! Best wishes!

In most cases blepharoplasty scars may be red or raised
right after surgery. Over time they typically flatten and fade out. At 4 weeks
you are early in the healing process, be patient, you should see improvement. Good luck and I hope this helps.