What does that mean? Nah im not diffuse I have quite a small amount of loss tbh barely noticeable, only close friends family who see me all the time noticed a slight change.I noticed no difference between finasteride and dutasteride for the hairline. more than likley at 20 you will not get hairline thickening with 5ar inhibitors because your hairloss is 99th percentile aggressive, especially if you are diffuse thinning.
that is what happened to me at least