There have been at least 2 formulations. I have 3 cakes in my vintage stock that list sodium tallowate as the first ingredient. Recently on The Bay I saw some for sale that is sodium palmate based. My boxes do not list metric weights, so they probably date to the early 90's or 80's.
I have not shaved with Burma Shave soap since the 90's, and I recall liking it. A Burma Shave brush, soap, and cup set was my first wet-shaving buy after breifly using shaving gels in college. I have no idea if the stuff I used was the talow or palm oil based. The brush was not good, but it got the job done. I used to just lather it on the puck with a wet brush, the way my father taught me. That thing would probably have made me bleed if I had tried to face lather.
