1-2 of about 2 matches for site:www.concretenetwork.com stains triggered
https://www.concretenetwork.com/fix-stamped-concrete/
with wrinkles and creases that can trap moisture, resulting in permanent water stains. These stains are barely
https://www.concretenetwork.com/doug_bannister/efflorescence.htm
for stamped concrete are so the waterproofed concrete does not readily accept either acid stains or water base stains