[PleasantlyFascinated]

I've used Life-Flo estriol every day for years, to get a daily estrogen fix.  Since I'm actively blocking androgen conversion to estradiol, it just about feels like I need it, with the benefit of getting estrogen in its safest form.

I did not notice growing any breasts, which I presumably would have, since I am applying it to nipples.

I switched to Smokey Mountain a couple of weeks ago, and am already finding that it seems way more potent.  I am noticing "breast" sensations I have not felt since I overdid androstenedione/androstenediol many years ago.

If you're looking for breast size gains, however, the E3 will occupy the hormone receptor sites that you would presumably want a more potent estrogen to occupy.