Why do the Klingons look different on Discovery?

Why do the Klingons look different on Discovery? The official explanation is that Klingons normally have hair but completely shave it off during a war. Pronounced. The DIS make-up includes cheek prosthetics.

The official explanation is that Klingons normally have hair but completely shave it off during a war. Pronounced. The DIS make-up includes cheek prosthetics.
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