Wyoming State Board Cosmetology Practice Exam

A common sign of healthy hair is strength and elasticity. Healthy hair is typically strong and able to withstand various styling practices and environmental stresses without breaking or becoming damaged easily. Elasticity refers to the hair's ability to stretch and return to its original shape without snapping. This characteristic indicates that the hair is hydrated and has retained its natural proteins, which are vital for maintaining its structure and resilience.

In contrast, brittleness, split ends, lack of shine, and unmanageable frizz are indicators of hair that is damaged or unhealthy. Brittleness implies a lack of moisture and protein, and split ends are often a result of excessive wear and tear on the hair strands. Lack of shine can be attributed to dryness or damage, while unmanageable frizz often indicates that the hair is dehydrated or damaged and is failing to retain moisture. Therefore, strength and elasticity are hallmark qualities of well-maintained hair, making this the correct answer.