Anyone know how to get rid of stubborn whiteheads? (lol)

Tretinoin is too harsh and unnecessary. Try Salicylic acid. You can try face wash like Cerave renewing SA cleanser to start with.

Yes!! I was also going to suggest face wash with salicylic acid. If this is a common situation, you may need to go a step further and use an active serum with glycolic acid. Gentle exfoliation is key :)