Which sign might a cosmetologist notice that suggests changes in thyroid function?

• A. Changes in eye color
• B. Changes in skin color
• C. Changes in the growth rate, quality, or texture of hair or nails
• D. Changes in blood pressure

Answer: (C)

Thyroid function shapes the body's overall metabolic pace, which directly affects tissues that turn over quickly, like hair and nails. In a cosmetology setting, you’ll often notice changes in how hair grows and how it feels, along with alterations in nail strength and texture. For example, thyroid imbalance can make hair dry, brittle, or thinner, and can change the rate of growth, while nails may become more fragile or develop surface changes. Eye color changes or skin color changes aren’t typical indicators you’d rely on in this context, and while thyroid issues can influence blood pressure, that isn’t something a stylist would use to gauge thyroid status. So the sign most likely noticed that points to thyroid changes is alterations in hair growth, quality, or texture and in nail growth and strength.