[Miss Mad Scientist]

I actually thought that too and wondered if that's why some cultures use sour cream masks to enlarge breasts! For a moment I thought you were going to say add of cream to butter and use

Haha cool! Great minds think alike

I think I am going to try out this method. There is also a little estrogen in butter I believe, but not so much as progesterone.

I will rub a little bit of butter on my ankles for a few weeks, see if I notice any change.
I bought the heavy cream already, it was $1

Pretty cheap progesterone/estrogen cream if you ask me