I’ve used flash many times on areas of my face with redness and/ or breakouts with success.
At first, I used a lower level flash while getting used to the product. Now, I use level 5 for everything. Find the spot, 1 or 2 flashes and on to the next spot. Of course, I wear the glasses and usually close my eyes before clicking to flash.
Source: https://bit.ly/3diLWMP