HELP WHY DOES MY MAKEUP & SKIN LOOK CAKEY AND DRY WITH ACNE?

HELP WHY DOES MY MAKEUP & SKIN LOOK CAKEY AND DRY WITH ACNE?
I’ve never had this issue before my makeup and blush and concealers would go on smooth. But I haven’t used face wash all year and I’m starting get many tiny pimples all over face and pores on cheeks and nose. I plan finally buy a face wash tomorrow but why my blush is coming out cakey? I used this blush always and it used to look so smooth on my skin. . It is due to the pimples that’s causing the blush look this way? In perosn my cheeks look like dead skin of on verge of falling my skin on cheeks look weird.
HELP WHY DOES MY MAKEUP & SKIN LOOK CAKEY AND DRY WITH ACNE?
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