Just a quickie,

Do trichomes repair themselves or do they have a one chance only?

I have noticed that when looking for colour change in them with my scope some trichs have there head/ball missing as its either fallen off or been squashed by me.
Will this grow again/fill back up?
Or Are they like corners? Cut one off and two more appear??

Cheers guys and gals if you have any answers or any more queries to chuck into the thread?