Reducing a Flat, Dark Scar from Iron Burn

It sound like you have suffered a burn injury.  The area is still very young.  It will take up to a year or so the pigmentation to possibly improve.  I would recommend sunscreen to prevent further darkening of the area. Laser therapy may improve the area once the area is very mature.

Dr. ES

I would begin treatment with two topical creams, Melarase AM in the morning, followed by Melarase PM in the evening, rubbed on the scar.  The darkening will gradually fade with the use of the creams. Another option for non-pigmented scars is the Plato's Medicinals Scar Serum. Surgery90210

What you have is dark pigmentations the result of previous inflammation caused by the trauma.  Application of silicone sheath is the first step in the right direction.  Total coverage from the sun during the next 3-6 months so that it will not get darker. Use of bleaching creams Tri-luma every night.  And maybe genesis laser treatment for improvement of texture and color.    

Fading creams like Triluma combined with light chemical peels would speed up the healing

What your picture appears to be is post-inflammatory hyperpigmentation.  There may be a slight scar in the middle, but the blurriness of the picture makes it hard for me to determing.  Most of the time, post-inflammatory hyperpigmentation clears on its own, although it may take 6-12 months.  I agree that sunscreen use is essential to prevent it from darkening anymore.  You could talk to your dermatologists about hydroquinone creams; sometimes they can help expedite the process of fading (although you're still looking at several months either way). 

First, keep in mind that most every scar will improve over time. Your scar is still relatively young, and will likely improve without much more than routine skin care. To prevent hyperpigmentation, I counsel my patients to use daily sunscreen and keeping a healing wound away from sun as much as possible. Check with a plastic surgeon or dermatologist so they can evaluate the burn to see if anything further can be helpful.

At 4 months, you can safely use a lightening cream to improve the dark coloring, in addition to daily SPF 30.

After about a year, if the scar is still dark and "unsightly", re-check with your provider to discuss options, like chemical peels or laser scar therapy to improve the scar.