Can you direct me to the patent you refer to?
I googled patent hair loss Estriol and guess what? First result returns it.
The composition most commonly used in the clinical experiments reported herein is designated Composition 0L and has the following formula:
Estriol 0.1 gram.
Benzalkonium chloride (antibacterial surface-active agent) 0.05 gram.
Ethyl alcohol 39.0 grams.
Corrigentia odor As desired.
Distilled water To make 100ml.