azelaic acid in the morning with vitamin c also, spf (i rec skin 1004 blue spf buy it directly from korea for best prices)
night: moisturize, tret, moisturize again. tip: use skin 1004 hydrating serums, dr athalea 345 cream or just any moisturizer that wont break u out.
you can intercalate the days, first week, use it only on fridays, later on, use it every time your skin is not shedding, always increasing the number of days. if your skin is shedding the barrier was damaged. make sure to never apply it with shedding skin else it will purge and worsen it. its better to take it very slowly until you can no longer shed while using it.
if youre shedding apply moisturizer as much as you can until your skin is no longer shedding. thats all.
and dw you just need to avoid the shedding and redness, else it will nerf you and youll look burnt.
never take sun directly if youre using tret with no spf. if youre going to the beach or somewhrer you can spend time in the sun, dont wear it the day before.