Patina on Metal; to Not Practice and Perform Badly
This page is the CodyCross answer for the clue below from Cosmetology, Group 1776, Puzzle 2 (Intense Pulsed Light).
Question is: Patina on Metal; to Not Practice and Perform Badly
and the answer is: RUSTINESS
Word Meaning:
RUSTINESS — The state of being rusty.
Definitions from Wiktionary.