What cream to use on blackheads?

Nose holes are nothing more than enlarged pores. You can't remove them completely, but you can reduce their visibility. In skin care, it is worth using cosmetics with pore-tightening ingredients, such as AHA acids (mandelic, glycolic, azelaic), BHA (salicylic acid), niacinamide, or retinol and its derivatives.

Below are some examples of creams that can help with enlarged pores and can be purchased from brick-and-mortar pharmacies or home delivery:

Pharmaceris T Sebo-Almod Peel 5% with Mandelic Acid
https://www.gdziepolek.pl/produkty/61161/pharmaceris-t-sebo-almond-peel-5-krem-z-5-kwasem-migdalowym-na-noc-i-stopien-zluszczania-krem/apteki

Bioderma Sebium Pore Refiner with Salicylic Acid https://www.gdziepolek.pl/produkty/69741/bioderma-sebium-pore-refiner-preparat-zwezajacy-pory-krem/apteki

CeraVe Anti Blemish with Niacinamide & Retinol https://www.gdziepolek.pl/produkty/118696/cerave-anti-blemish-serum-odbudowujace-z-retinolem-krem/apteki

It is worth remembering that the condition of the skin and the visibility of pores are affected by the entire daily care. It's important to cleanse your skin thoroughly morning and night, keep it hydrated, and use sunscreen all year round.

I've attached some interesting materials below:

https://www.gdziepolek.pl/kategorie/dermokosmetyki-do-skory-tradzikowej

https://www.gdziepolek.pl/artykuly/fakty-i-mity-o-tradziku-mlodzienczym