Is this redness normal? I'm 26 days post-op Breast Reduction. (photos)

Thank you for your question but it is hard to tell exactly what is happening to your incisions.  I would recommend you follow up with your surgeon who can guide you better on what will work and what won't.  I would not put anything on your scar your surgeon has not recommended especially Vaseline.  You appear to be doing quite well and you are early in your recovery and I would recommend patience at this point.