Final answer:
Internal factors such as genetics and hormonal changes, as well as external factors like environment and diet, can impact hair health.
Step-by-step explanation:
There are several internal and external factors that can affect hair health. Internal factors include genetics, overall health, and hormonal changes. For example, certain genetic conditions or hormonal imbalances can lead to hair loss or thinning. External factors include environment, diet, and hair care practices. For instance, exposure to harsh chemicals, excessive heat styling, and poor nutrition can weaken the hair and make it more prone to damage.
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