[Dynseli]

I've been looking into activating fatty tissues in breasts through a specific enzyme, which btw we (humans) have about 10,000 different enzymes, lol.

Also, we should be focused on the anatomy of the Breast and how we can influence it, i.e. each breast contains about 20 lobes, fatty tissue, oh yeah, and pectoral muscles. (Goal-build muscle and tissue)

Estrogen receptors of: ER-α (alpha), prolactin receptor, and progesterone receptor are in mammary glands.
Agonist hormones activate those three estrogen receptors, and (usually) cause cell proliferation. It is uncertain what the function of herbs known for weight loss, that have agonists, do. Androgenic hormones are antagonists (against) to those.
ER-β (estrogen receptor-beta) is not generally in breast tissue.