Will my scar heal? I had a hairline lowering procedure June 2016 (photo)

It is best to contact your surgeon for post surgery issues.If your scar is noticeable, a hair transplant is an option to conceal your scar.

For men, my main concern for men who have a hairline advancement surgical procedure is in the potential balding that may occur as most balding can start at any age and advance until the mid-fifties. If that happened to you (your risk) then you will have to get a hair transplant to cover it as a scar from a hairline lowering surgery will show with a receding hairline as the frontal area is the place that genetic balding starts in the most men. For young men, this chance of this happening is fully 99% so a surgical hairline lowering is not the procedure of choice in men for a receded hairline. This scar is permanent and you need a hair transplant to cover it, burying it in the new hair placed by the hair transplant. 

The appearance of your incision line 16 months after your hairline lowering procedure will not improve. Although it is not visible in this picture, I suggest you have some micrografts placed right at the hairline to camouflage the incision if you're not satisfied.