After Kali raged, the corruptive power that sourced from 'rage' allowed her to suddenly have the power to break through the God Slaughtering Formation. However, it had turned her from a holy pixie into a fallen pixie.
And at this moment in time, Shi Xiaobai had used his superpower, 'Power Siphoning', to forcefully snatch the corruptive power from Kali. As a result, this power was also sucked into his body.
As such, Kali's hair returned to the purple color she loved. With the corruptive power disappearing completely, she had transformed back into a holy pixie.
As for Shi Xiaobai, his hair had become the silverish-white color that was an emblem of fallen pixies.
The silver color was shiny, as though beautiful flowing clouds or water.
The silver hair suddenly added a sinister handsomeness to the delicate-looking Shi Xiaobai.
If this were purely a result of dyeing his hair, it would undoubtedly make him look suave.
