Concealer turns gray after powder why??

My concealer looks PERFECT before setting (bright, smooth, right shade). The second I apply loose powder, it turns gray/ashy and loses all brightness.

I’ve tried everything:

more powder = cakey + gray

less powder = less cakey but STILL gray

different powders: Laura Mercier (Rose), Huda Beauty (Banana)

Same result every time.

➡️ before powder = flawless

➡️ after powder = gray, dull

Using Estée Lauder Double Wear concealer (2N), slightly dark + dry under-eyes.

Anyone know how to fix this