Can I use Rivanol donuts if I have terrible acne?

I see no justification for doing so. You already have a prescription antibiotic product - Clindacne gel contains clindamycin, which inhibits the growth of Propionibacterium acnes. In addition, Rivanol will dye the skin yellow, which in the case of the face would be unacceptable in my opinion. If you want to do something more for your skin, I would suggest that you be interested in comprehensive acne skin care, starting with the reconstruction of the hydrolipid barrier and providing the skin with ingredients that can limit the overproduction of sebum. Aggressive drying of the skin or attempts to matte it with the help of color cosmetics can aggravate the problem. I enclose additional information that may be helpful: https://www.gdziepolek.pl/kategorie/dermokosmetyki-do-skory-tradzikowej https://www.gdziepolek.pl/kategorie/tradzik https://www.gdziepolek.pl/artykuly/jak-pozbyc-sie-tradziku-u-doroslych