Baldness is an inertial state

People who are bald tend to stay bald unless an outside force promotes hair growth.  This is why people who merely shave their heads are not bald.

Comments

[Jacob Haller]

How about if you die in a horrible scalp-shaving accident?

[My Alter Ego]

Then you get nominated for a Darwin Award, but you are still not bald. Those who were not bald when alive are not eligible to become bald posthumously.

[Chris]

That is so true.

[The Modesto Kid]

Plus doesn't hair and fingernail growth continue for a little while after you die? So even if you did die while or immediately subsequent to shaving, you would not be permanently hairless.