I think the 1st time was after my non avm related stroke which was a massive stroke to the thalamic area and blew out the vein lower left side that later became a DAVF- So I think it was about 2 months or 3 months for me of losing massive chunks of hair, plus they had shaved some of the top of my head before they knew what was wrong to do a biopsy - but thankful the pre scans showed the blood clots
So I think it took like a year. Plus I had my 1st angio 10 months after my stroke and then lost more hair.
My second angio was May 2015 and I think I lost hair for about a month and it I would say about a year. I hair below shoulder length hair and it looks like you do too so I think it will be about a year to have that full head of hair feeling.
I still only wash my hair every other day but wet it in the shower and I use the tea tree oil shampoo or shampoo without many of the bad stuff in it.
I also normally just let it air dry as well since I no longer can work or use a diffuser - I like Shea Moisture products you can find them on drugstore.com or even at CVS. They are sulfate free and gentle.
It will grow back I was worried it would grow back straight since I have wavy hair but it grew back the same. My hair person can tell every time I have an angiogram cause it will feel thinner but she says my hair is super healthy even though I color it myself with John Frieda foam colour about every 2 months - I just dont have the patience nor the funds to do it at the Salon. :)
Just be gentle with your hair and it will come back healthy. I think eating Jello creates healthy hair and nails since you cant take turmeric. Maybe try some weekly jello!