Flaking skin on DDs face - teen - help please!

[Mykittensmittens]

Prom in a couple of weeks and she’s not happy. She is autistic which also means the prospect of taking her to someone to do make-up (or for a facial etc) is an absolute no.

she currently has blotchy red acne, diagnosed, and is using prescription gel. It’s been almost a year and it’s not only effective periodically and right now she’s having another bad patch.

she wears no makeup at home, uses the gel and a light moisturizer, but insists on covering her whole face with concealer for school (an ELF one, with a wand). Within 2-3 hours it’s flaking - badly - but she will not go to school without it on. She says she is using a primer under the concealer and exfoliating regularly.

she’s getting more and more self conscious and with prom looming I don’t know what to suggest. Without the concealer all over her skin doesn’t look flaky at all. Is the concealer causing it? Or the primer? I don’t know much about makeup at all but it’s really getting her down if anyone has any ideas?

I get very spotty & flaky if I use products that are too harsh. I find coating my face in Avene Cicalfate for a few nights helps to heal my skin barrier so make up sits better. It doesn’t give me spots although I appreciate it seems counter productive to coat a thick moisturiser on. Healthier skin can be less reactive so perhaps that’s why? I don’t know.
A hydrating mist might help her throughout the day & she can pop a mini one in her bag for pram (if it’s a large clutch!). The Curel deep moisturising one is great as a first layer of skincare underneath serums & moisturiser but it also works on top of make up if you give it a minute to dry.
A light hydrating serum might also help. The Inkey List & The Ordinary have good ones.