The main character, Xiao Qing, was a woman who was kidnapped to the high-risk occupation of the emperor. She stayed up late for a long time and overworked herself, causing her white hair to increase. I hope you like this fairy's recommendation. Muah ~😗
In Ni Haixia's scripture, the recipe for turning white hair black was the madder root paste. The ratio of madder and dried root was 1:3. The two herbs were boiled into a paste and taken daily. The madder root had the effect of cooling blood, promoting blood circulation, removing blood stasis, and clearing the meridians. The dried root had the effect of cooling blood, stopping bleeding, clearing heat, and promoting the production of saliva. When used together, the two could improve the blood supply to the scalp and alleviate the problem of white hair. The method of taking the Rudra Root Ointment could be taken with yellow wine. In addition, there was another way to use the Chinese arborvitae leaves to wash your hair and apply it to the white hair roots once or twice a day. After using it for a period of time, your hair would gradually turn black. These methods were all methods that Ni Haixia had used to treat white hair turning black.
There were no fantasy novels where the protagonist's hair turned white overnight and reached 3 million words because such novels usually involved a large number of plots and characters, and it was difficult to achieve this goal.
He might become more withdrawn. With the change in his appearance, he could feel different from others. For instance, he might start to avoid his friends because he thinks they will see him as a freak. This would be a big change from his usually outgoing and friendly self.
One interesting fanfiction is 'The White - Haired Naruto's New Path'. In this story, Naruto's hair turns white after a battle with a powerful, ancient demon. His new appearance makes his friends initially wary, but he uses it as a motivation to prove himself again. It shows his growth and how he overcomes the challenges of being different.
He accompanied Shen Li till his hair turned white. Xingzhi and Shen Li had a happy ending in the plot. They expressed their feelings to each other, and no power could separate them. Xingzhi became an idle immortal. Although he had lost his divinity, they could grow old together and no longer be bound by the responsibilities of the three worlds and others. This ending made the audience feel touched and comfortable. Their sadistic love had finally come to a satisfactory end.
One possible reason could be extreme stress or trauma. In the Naruto universe, he has faced many difficult situations. If a fanfic writer wants to show the toll it takes on him, white hair could symbolize that. For example, if he loses someone very close to him like Sasuke in a more permanent way, it might be so devastating that it causes this physical change.
Hermione might be the one. Since she is often involved in complex magic experiments and dangerous situations. If she were to accidentally expose herself to some unknown magic during one of her research, it could lead to her hair turning white. For example, if she tries to decipher an ancient and powerful spell and something goes wrong during the process.