Only Goku has mastered Kaioken, using up to x20 but never combining it with Super Saiyan. Combining Kaioken with SSJ is risky due to the emotional stress of SSJ affecting ki control.

As you can see in the video below, Goku will be putting on a bright red and blue color show when he goes from Super Saiyan Blue to Kaio-Ken 20x while in that form!