New knowledge after lunch

What do you know....arent we learning new thing or things everyday. Had my neighbor and a friend together for lunch. Quite a long process. As I picked up parcel for my Korean flatmate ah how I hated park the car at post office..people might have thought I was an idiotic driver just to make me a living proof that asian is a bad driver. Went to casino café China express to find C already there..meanwhile P went to another one so she had to drive over.  C and I discussed what we're gonna have as he looked at the menu he's disappointed the one he wanted not listed so I suggested we should check the other cafe China in the casino.  Which we found its listed. So there we set the table.  P chirped her way in and food started flowing in. Siomay. Chicken feet. Mee goreng. Laksa. Pork and mushroom buns. Bakpao. Pork dimsum. And I had the majority. I was hungry boy. I thought it was quite something to have aboriginal waitress. Korean and hongkong waitresses serving our table. Managed to blurt out kamsahamnida to cheer the korean one to her delight...good job me!
Moved to drifting coffee and the conversation went about tawas for body odor. They knew about mbk powder which I havent beard anything about. Went home and Googled it.it turned out it was tawas which always been great for body odor...underarm to be more precise. Little bit more digging. Tawas is alum
Which is aluminium sulfate. Variants used for antiperspirant in the US. I suppose mbk is like in a purest form I would suspect. Turned other variant is aluminium potassium sulfate found in baking soda.
Apparently baking soda may be used for smelly underarm as housewife recipe goes.
As long as not applied on cut skin it should be fine. The baking soda need to be mixed with water to make a paste and apply direct onto underarm and leave for 3 minutes then wash properly. It can also be used for smelly feet. It kills germs and bacteria that cause smell.
There!....interesting. ...