Yes, thus far ive had improvements in the the following areas you mentioned.
Cognition: pretty much recovered, head is clear
muscles: mostly regained, but was bulky pre pfs so the muscle lost went away with some fat ,hard to explain
hair: improved after water fast and in following months, was dry like hay after crash
facial hair: lighter than before, but a non issue in grand scheme of things
anhedonia: never really an issue
skin: definitely tighter