Below is a picture of the vertex of my scalp magnified 30X after a hair transplant (+1 year) and Propecia. As you can see from the picture the Propecia is generally keeping the follicles "open" even after 10+ years. Some of the hairs are transplanted and some of them are not.
Look what tools exist! You can't just eyeball if a treatment is working. Know that a folliscope is a good tool when used by an experienced doctor!
Considered "Moderate" in Vertex

Considered "Good" Caliber in frontal area. Slightly behind hairline
.62mm - .75mm (this is an EXACT measure of caliber)
Look what tools exist! You can't just eyeball if a treatment is working. Know that a folliscope is a good tool when used by an experienced doctor!
Considered "Moderate" in Vertex
Considered "Good" Caliber in frontal area. Slightly behind hairline
.62mm - .75mm (this is an EXACT measure of caliber)