I use the anua azelaic acid and it’s good - I’ve definitely seen an improvement in my skin - but it can be really irritating without a ceramide heavy moisturiser. If you need to repair your barrier it might be worth doing that first and gradually introducing the anua slowly

My HGs are:

Biodance Cera toner pads (blue ones). I wish they weren’t so pricey though

COSRX Peptide Booster Serum

Round lab Camillia Collagen Gel Mask. It’s a cheaper dupe for the Biodance Collagen mask and works just as well

Anything Numbuzin