I had Fraxel laser on face and chest 2 days ago. I don't think it worked on my chest? It's showing no real difference (Photo)

Treatment setting on the face and chest need to be different due to different healing times of these two areas.  Generally you need 3-4 treatment in a series for optimal result.  Also a few days out it is not possible to determine how effective a treatment is going be.  Full results are seen a minimum of 3 months after treatments are completed. Good luck with your treatments and please see your physician with any concerns you may have.

It is too early to determine the results of your treatment. The course of healing for the chest is longer then the face however, so I wouldn't be using the face as a comparison for the healing timeline. It will take two weeks for the chest to fully peel. I would give it some time before you make a final determination on your result. 

Fraxel is a great laser but it takes longer for the chest or body to heal - up to two weeks - and takes more treatments to have the same result. It takes at least 3 treatment on the chest to reduce years of sun damage in that area.  The same can be true of arms, neck, or back in regards to Fraxel.  Please consult an expert in Fraxel for the best cosmetic results.  Best, Dr. Green