There's an online course by Pixar/Khan Academy that follows the animation pipeline. There's a video here by a SWE who worked on animating Merida's hair in Brave (they explain a few different methods they tried and why they didn't work): https://www.khanacademy.org/partner-content/pixar/simulation/hair-simulation-101/v/hair-simulation-intro
Nvidia also does work on real-time hair modeling with Nvidia Hairworks, with Witcher 3 being a good showcase: https://www.youtube.com/watch?v=tB2RcvWRh40
The Pixar movie Brave got attention for the hair animation it did. Pretty interesting how much work went into those details https://www.insidescience.org/news/brave-features-hair-raising-animations
I heard the movie Frozen was also quite a technical achievement due to the hair simulations used for Elsa. Apparently the sheer number of hair strands made it difficult to render.