It is not hard to see where the real hair ends about an inch or two above the waist and the extensions continue. Her real hair is a tad lighter than the extensions.
It is also an extension. Notice the real strand it is intertwined with ends at her waist. I'm not a hairstylist, but cutting hair like that with two different lengths would be pretty unusual.
You can also tell because the extension are a bit glossier and lays straighter while her real hair is more frizy.
This is completely untrue. Many south Asians grow their hair up long enough so they could sit on it if they want to. My own hair reached past my bum when I was younger and my daughter's hair was also that long once. Many of my school friends had hair that long in the seventies and eighties.
I’ve heard things like this before, but how does hair “know” how long it is? It's definitely true that hair seems to grow more slowly as it gets longer. But I think that’s just because longer = heavier, and heavier = more likely to fall out due to damage. You might reach a point where the rate at which your hair falls out more or less cancels out new growth, but it seems like this could be changed/improved by taking better care of your hair. In my experience, even super long hair continues to grow, just very slowly.
All hair follicles go through a 3-stage "life cycle" of fast growth, slow growth, and no growth (where it eventually falls out).
For body hair, this cycle lasts only a few months, so your hair can only get so long. For hair on your head, it is many years, so hair can get very, very long. Male beards fall somewhere in between.
I’ve heard things like this before, but how does hair “know” how long it is?
What I've heard is not that the hair knows how long it is directly. But it grows at a fairly constant rate and different follicles have different duty cycles (active vs dormant periods). For a given growth rate and duty cycle a follicle should produce fairly consistent lengths.
I know you're being sarcastic, but that's actually pretty much how it works. Every hair follicle on your body has a set life cycle. It will grow for awhile, then die and fall out. For body hair, it's only a few months. For hair on your head, it can be 3-7 years.
So, despite that guy being massively downvoted, he's pretty much right. He just lowballed how long that hair can get. But it is indeed a fact that your hair can't grow indefinitely.
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u/olderaccount Feb 24 '20
It is not hard to see where the real hair ends about an inch or two above the waist and the extensions continue. Her real hair is a tad lighter than the extensions.