Outermost Layer of the Hair Shaft
This page is the CodyCross answer for the clue below from Top Secret, Group 2094, Puzzle 5 (Tracking Device).
Question is: Outermost Layer of the Hair Shaft
and the answer is: CUTICLE
Word Meaning:
CUTICLE — The outermost layer of the skin of vertebrates; the epidermis.
Definitions from Wiktionary.