The Lord does nothing "just because." His workings are very precise and purposeful. When we demonstrate the Word through movement, all that we do should line up with His attributes.
Hair can be a distraction in a ministry piece if the style does not match the presentation. Hair that sticks to the face wet with sweat may not necessarily be a bad thing, if the message is showing struggle or a radical praise. It may be a hinderance if the dancer's hair is moving more than the dancer (smiling) and becomes the focus of the piece unintentionally.
If you dance with a group, it would be great to be on one accord when choosing what style appropriately fits the message. Bright red hair (or purple- or blue- or pink), mohawks, mullets, and artwork shaven in the head may get more attention than is needed. Let's make sure to let nothing get in the way of our service to the Lord.
After all, He knows the number of hairs on our heads.