Meaning is something like this:
The hair of eyelid ( अक्षिपक्ष्म).doesnot grow.(कदा लुप्तं)
Whereas the hairs on head keeps growing( शिरोरुहाः), hence it is cut again & again whenever it grows(छिद्यन्ते हि).
Similarly when some one grows himself towards improvisation,(वर्धमानात्मनामेव) definitely he has to face a lot of vipattis/obstacles. ie., Obstacles are certain when someone grows in life.
Thanks a lot Shankar Mahoday & HN Bhat sir.
This was the sloka I was looking for.