Itchy, red reaction to steri strip adhesive after lipo to the abdomen! Possible allergic reaction? (Photo)

I had a lipo done to my abdomen 6 days ago and had some sort of allergic reaction to the steri-strip adhesive (scar in the picture is from a TT done in 2013). PS advised me to remove the strips, clean the area, and put my CG back on. Later, he advised to take OTC Benadryl and hydrocortisone creams. I've been doing that and used anti-itch powders now for several days and it hasn't gotten any better. I've even let it air out without the CG on and still no improvement. Infection is ruled out.