Today I want to talk about Saya's hair. Saya has long silver hair that goes down to her thighs. Specifically, her hair starts out as a gray silver, then turns into a blue silver at the ends. This is in contrast to her animal parts, which start out white, then turn gray near the ends. Furthermore, in her casual outfit, this gradient isn't as apparent, but instead her hair reflects a slightly blue sheen when in the sun, implying that her hair is silver, with a white radiant. She also has a hat in her casual sprite with two little zippers for her ears- these likely have something to help soften the zippers, because this seems like it would be uncomfortable otherwise. She normally wears a blue ribbon at her hairline, possibly being used as a hairband or some other implement to prevent her hair from getting in the way of her experiments. She also seems to have twintails in her normal outfit, further exemplifying her care to make sure her alchemy doesn't get messed with. Otherwise, she doesn't really do much for her casual wear, instead just letting her hair down, which makes sense given that it's her casual outfit. She manages to both have very clean, straight hair, while also having her hair go all over the place. It's a clever combination of a rat's cleanliness with a mad scientist's messiness. It's impossible to give a consistent answer how her hair smells- her alchemical experiments cause this to be way too variable. However, her hair product is likely very sterile without much scent, that way she can more accurately tell what her creations are doing.