In fact, Kim was the inspiration behind all the rainbow strands in South Korea (viaFashionista).
She is not one to shy away from taking risks.
The lighter the hair, the more vibrant the rose gold will it appear.

Once the hair is light enough, she adds the tinted gloss to deposit the rose gold shade.
But remember, your base color still needs to be light (viaRefinery29).
It is essential, though, to take care of this hue.

In fact, the color will require touchups every six to eight weeks (viaByrdie).