What is indicated by the term "new growth" in hair care?

The term "new growth" specifically refers to the hair that is growing out from the scalp and has not been subjected to any chemical treatments. This means that it is the natural hair that has emerged since the last time the hair was treated, whether it be through coloring, perming, or other chemical processes. This growth is significant in hair care as it helps professionals determine how much of the hair has been treated and whether touch-ups or different services are needed to ensure an even appearance and health.

In contrast, the other options describe varying states of hair but do not correlate with the concept of "new growth." Hair that has been previously colored or chemically treated would not be classified as new growth, as these processes alter the original state of the hair. Similarly, damaged hair can result from various factors, including environmental stressors or improper care, but this does not define new growth either. Understanding the distinction is crucial for hair professionals when planning treatments and ensuring the integrity and appearance of the hair.