I have a few experiences I'll share.
First girl I ever got to enjoy my fetish with was my best friend. She had long Middle Eastern dark hair that had a curl to it. I told her about my fetish and she let me play with her silky hair anytime we were together. Then one day she even let me experience it sexually. She even had her hair straightened which I absolutely loved! I got to experience it several more times sexually.
I then had a blonde girlfriend who had super thick hair. She let me play with it any time I wanted, but sadly never got to enjoy it any other way.
I've had a few friends that have let me enjoy their hair. One was a blonde who had short pixied hair which was hot because every time I messed with it it just went right back into place. Also when I grabbed it she would tilt her head to whatever direction I pulled it. It was so hot. And she said I could play with it any time I wanted and encouraged it.
I also had a friend who had short dark hair and she let me play with it all the time which often led to sexual activities. She let me enjoy it sexually as well.
Unfortunately all those are stories of my past. I don't get to enjoy any of those heads of hair currently. However, I do have three heads of hair that I do get to currently enjoy.
One is my current best friend. She has blonde hair down past her shoulders. Whenever we hang out she offers me her hair because she knows I love to play with it and it puts her to sleep, so she rests with her head in my lap and lets me run my fingers through it and pull it to my heart's desire and it's so soft.
The second is one of her and my friends. She has shoulder length dark hair and it's so swishy. There was one night in particular that as I was pulling it she got really turned on. She got so horny that she became a ragdoll in my hands. I pulled her head wherever I wanted. I loved watching her shake her head and even got her to do it for me as I asked. Figuring I should enjoy the feeling of her shaking her hair, I took off my shirt so I could feel it brush against my skin. It got so hot pulling her hair and guiding her head around with her tresses like a leash that things did turn sexual. Unfortunately I didn't get to enjoy her hair sexually, but it was damn hot.
Last current head of hair I get to enjoy is my wonderful recently acquired girlfriend. She is Asian with long dark hair and she pleases me with it regularly and goes nuts when I pull on it.
I'll add one more experience of hairplay. One of my close friends. I have asked to play with her hair once or twice and she has let me. I'll link that into this: if you have a friend whose hair you want to play with, just ask. I have never been turned down. Ever. Granted, I don't ask every single girl I meet (though rereading this it might seem like it) but I do it with people that I know will trust me.
Ask friends that you trust and that trust you.