Minnesota Cosmetology State Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

Over-processed hair can be identified by its brittle, dry strands and excessive frizzing. When hair undergoes too many chemical treatments, such as coloring, perming, or straightening, the cuticle layer becomes damaged. This results in the hair losing its natural moisture and becoming porous, leading to brittleness. The strands may also appear dull and lack the natural shine that healthy hair exhibits. Additionally, excessive frizzing is a common sign of over-processed hair, as the damaged cuticle allows moisture to enter and disrupt the hair’s natural structure, causing it to puff up and appear frizzy.

In contrast, natural shine, healthy elasticity, and vibrant color are characteristics of well-maintained hair that has not been subjected to excessive chemical treatments. Healthy hair will exhibit a degree of elasticity, allowing it to stretch without breaking, and retain a beautiful, vibrant hue without signs of damage.