The tag alias #52243 spiked_hair -> spiky_hair has been approved.

Reason: The tag spiked_hair is a spelling variation of spiky_hair. The tag spiky_hair is currently utilized (instead of spiked_hair) to help distinguish this tag as being separate from the spikes tags (as well as currently being implicated to hair).

EDIT: The tag alias spiked_hair -> spiky_hair (forum #311954) has been approved by @Rainbow_Dash.

This is blocked by alias #14326 and alias #12960 – those would need to be rejected before this can go through.
Additionally, I would recommend making aliasing spikey_hair to spiky_hair.

alias spikey_hair -> spiky_hair