Damage from INFINI treatment. How can I improve it? (Photo)

After examining your photos, you still have time to heal. "Grid marks" happen when the hand piece is lifted from the skin prior to the needles fully contracting. I would agree with using a Retin-A and a skin bleaching cream such as hydroquinone.  Also follow up with your provider.

I find that nonablative lasers like clear + brilliant or Fraxel help to improve this along with pulsed dye laser or V Beam.  skin lightening creams work well, tretinoin or tazorac will help along with hydrafacial or beta peels.  I find that growth factors and silicone based scar gels help this as well along with enzematic cleansers.  Best, Dr. Emer.

In my opinion, the gentle waves treatment is excellent for reducing redness after infini. We have also used IPL and pulsed dye laser as well as a mild topical steroid. The grid marks and redness will disappear over time. Using a micro needle roller or a mild non-ablative laser can speed up healing of grid marks. Diluted bleaching creams or low concentration tretinoin helps with pigmentation. You should return to your doctor and have him help with your post operative course.