Discoloration after steroid therapy, especially in the case of seborrheic dermatitis (ISD) treatment, can be difficult to eliminate. Active ingredients that can help even out skin tone and reduce hyperpigmentation include, m.in:

- niacinamide - has a brightening, anti-inflammatory and strengthening effect on the skin barrier, which is particularly beneficial for PsA, e.g.:

https://www.gdziepolek.pl/produkty/91770/pharmaceris-w-melacyd-dermo-ochronny-krem-wybielajacy-przebarwienia-na-dzien-spf-50-krem/apteki

https://www.gdziepolek.pl/produkty/114445/cetaphil-bright-healthy-radiance-kojacy-krem-na-dzien-rozjasniajacy-przebarwienia-spf15-krem/apteki

- azelaic acid - has the ability to lighten discoloration and is gentle on the skin, which is important in the case of PsA, e.g.:

https://www.gdziepolek.pl/produkty/96651/sesderma-azelac-krem-nawilzajacy-krem/apteki

- vitamin C - a powerful antioxidant that lightens discoloration and evens out skin tone, while protecting the skin from further damage by free radicals, e.g.:

https://www.gdziepolek.pl/produkty/105968/dermedic-melumin-krem-koncentrat-przeciw-przebarwieniom-na-noc-krem/apteki (also contains niacinamide)

https://www.gdziepolek.pl/produkty/85565/ziaja-med-kuracja-dermatologiczna-z-witamina-c-ha-p-krem-na-noc-krem/apteki

Regular use of any of these ingredients, combined with good sun protection, should help reduce hyperpigmentation after steroid therapy. Before starting to use creams for hyperpigmentation, it is worth consulting a dermatologist, especially in the case of sensitive skin prone to PsA.

I am attaching a helpful article: https://www.gdziepolek.pl/kategorie/przebarwienia-skory