Here's why:
* Hair growth: Hair grows from the hair follicles in your scalp. The length of your hair is determined by how long the hair shaft is, which grows from the follicle.
* No shrinkage: Once a strand of hair emerges from the follicle, it doesn't shrink in length.
* Trimming: The only way to shorten hair is to physically trim it.
However, there are some things that can make hair appear shorter:
* Damaged ends: Split ends or breakage can make hair look shorter, even if it hasn't been cut.
* Styling: Certain hairstyles, like braids or updos, can make hair look shorter than it actually is.
* Hair texture: Curly or wavy hair can appear shorter than straight hair, even if it's the same length.
So, while hair cannot get shorter on its own, there are factors that can affect how long it *appears*.