No one can get topical pirenzepine yet. Winsantor has stated this on their website. They have to have enough of the compound to use in their clinical trials. I'm thinking that's the reason.
They are a small biotech company. I ordered it from Japan, as did other people on Reddit. I'm taking it orally now. I was doing topical but I've seen people that have good results doing it orally. I haven't been on it long enough to notice change-only a month.