I would love to see more content on Reddit. I'm currently one of the moderators on r/ponytailfetish. Reddit is a great format for stuff like this and there are PG and NSFW options and you can choose which ones you want to subscribe to
PG options are:
reddit.com/r/Hairporn/ not what it seems, mostly nice hair
reddit.com/r/sexyhair/ mostly Celebs
reddit.com/r/hairfetish/ Discussions mostly. Lots of haircutting talk 
reddit.com/r/ponytailfetish/ My subreddit. Just ponytails, hardly any nudity even though it's marked nsfw
NSFW options are pretty vast, but the hair related ones are:https://www.reddit.com/ponytails/