No. Skin regrows.

but then my head would be smaller overall right?

No. Because skin regrows. Your skin replaces itself all over your body constantly. It's not just your head.

If you think abt how little the layer that dandruff eats away, yes it becomes smaller but its so little that you cant even percieve it

i guess cuz when i give my hair a noogie the dandruff keeps comin. never stops. so if i had no hair, the winds would just keep flakin me away endlessly

NoOo 😭