Pulsed Dye laser to treat redness after a mechanical and treatments to improve acne scars? (Photo)

Yes, the pulsed dye laser is one treatment you can use for the redness.  Any laser that targets red blood cells as it's chromophore will work well.  There are many different devices out there.  It depends on what your laser surgeon has at his disposal.  Best of luck!

Pulsed Dye or Proyellow can be used to treat redness, but a combination approach would give the most improvement. This can be improved with a combination of lasers (ProYellow, Excel V, Vbeam), Aerolase, microneedling/prp, skin lightening, peels, and skin care. Sun protection is essential. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer

The type of scars that you show may be best approached with targeted care, including fractional laser, PRP, eMatrix and HA filler. Pulse dye laser is more appropriate for post inflammatory erythema.
Pulse dye laser can cause bruising and swelling and I precondition and treat my patients with a bioflavonoid product called Swell-x pt (post treatment) and also an oral supplement for PIH relief called Scler-X and I find them to be effective. As mentioned, efficacy is related to destruction of blood vessels with expected bruising and unfortunately, potential for hyperpigmentation, hence the need to use such products. Link is provided for more information
Hratch L Karamanoukian MD FACS