I recently read about potassium aluminum sulfate that it has astringent property and has the ability to constrict body tissues and restrict blood flow. Since, for penis, the erection happens with the flow of the blood being directed to penis' blood vessels, does this effect of potassium aluminum sulfate cause an erection problem or any other effect on male/female sex organ?
Oral ingestion of simple aluminum compounds is not absorbed. Topical genital application is definitely not recommended. There is no obvious connection between aluminum and tumescence, one way or another
Soluble aluminum is toxic, likely cumulatively neurotoxic. It is not absorbed from the GI tract unless complexed. Aluminum hydroxide antacids as foaming tablets( citric acid plus sodium bicarbonate) gave aluminum citrate that is bioavailable. Bad idea. Pickles are made with alum to keep them ever so crunchy. The soluble aluminum is claimed not to be absorbed. Antiperspirant contains aluminum chlorhydroxide or glycinate to stopper sweat glands. Topical application is not absorbed. Exposing mucus membranes to soluble aluminum is definitely not recommended.