I have been diagnosed with Keratosis Pilaris. It's only getting worse. What can I do to improve it? (photos)

After a sudden onset of keratosis pilaris when I turned 27, I have now been suffering from the condition for over a year. It has gotten worse with time. It's on one arm and spreading to the other arm. The bumps do not bother me as much as the patchy redness. I have tried everything, researched for hours. I use ReTrieve cream (TRETINOIN) but I'm worried it makes the redness worse. I have hardly any bumps, just redness. I am trying Pulsed dye laser. I'm considering Roaccutane

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