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Why does blond hair tend to darken with age?
Live Science ^ | 09/25/2026 | Kenna Hughes-Castleberry

Posted on 09/25/2026 10:28:51 AM PDT by SeekAndFind

If your blond preteen seems to be turning into a brunette, you're not imagining things. For some children, hair that starts out platinum blond gradually becomes darker and may end up dark brown, or even black, as they grow.

So what causes this change?

The short answer is that hair color is controlled by a complex interplay of genes, pigment-producing cells and, later in childhood, hormones. Scientists understand many of the genes involved in hair color, but they are still trying to find out why some blond children's hair darkens while others' locks remain blond for life.

Latest Videos FromLive Science

"It depends on their genetic inheritance," Desmond Tobin, a professor of dermatological science at University College Dublin, told Live Science in an email.

Hair gets its color from a pigment called melanin, which is produced by specialized cells called melanocytes in hair follicles. There are two main types of melanin: eumelanin, which produces brown and black shades, and pheomelanin, which contributes yellow and red tones to hair. The amount and type of melanin produced by follicles largely determine the color of hair that grows from it.

In general, more eumelanin means darker hair. For example, during pregnancy, high levels of estrogen and progesterone can encourage hair darkening as more eumelanin is produced.

(Excerpt) Read more at livescience.com ...


TOPICS: Health/Medicine; Science; Society
KEYWORDS: aging; blonde; blondehair; blondhair; color; hair

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To: SeekAndFind

My hair started blond then went brown. My beard was red hair. In my case I think it is the result of a blending of the two traits.


21 posted on 09/25/2026 11:42:44 AM PDT by Nateman (Democrats did not strive for fraud friendly voting merely to continue honest elections.)
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To: SeekAndFind

Rust.


22 posted on 09/25/2026 11:57:36 AM PDT by econjack
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To: SeekAndFind

As a young boy mine was brown. Eventually turned dark black in my 30s and totally gray by 50.

Now it’s white.


23 posted on 09/25/2026 12:14:20 PM PDT by Fledermaus (Free Republic is going to be intolerable during the Republican Presidential primary in 2028.)
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To: SeekAndFind

My hair was blond when I was about 5 years old then over time went mouse brown. Then one day in college it suddenly turned light ash blond and still is today. πŸ˜‰


24 posted on 09/25/2026 12:20:32 PM PDT by Georgia Girl 2 (The only purpose of a pistol is to fight your way back to the rifle you should never have dropped)
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To: SeekAndFind

In the late 1960’s, I asked my father why he never yelled at me to get a haircut. All my friends at school were constantly complaining that their father was always on their case to get a haircut. My father never said a word to me about it.

He laughed and explained that in the 1920’s. he wore his long blonde hair in a pony tail. He was born in 1910, and that was the style when he was a teenager. He explained that my friend’s fathers grew up in the 1950’s with flat tops and crew cuts. They weren’t used to long hair.

Prior to that comment from my father, I never knew he had blond hair as it was always pure white ever since I was very young.


25 posted on 09/25/2026 12:22:50 PM PDT by tired&retired (Blessings )
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To: SeekAndFind
Finally... something that's not caused by Global Warming / Climate Change. πŸ˜€
26 posted on 09/25/2026 12:30:19 PM PDT by ken in texas
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To: SeekAndFind

My mother used say that my hair was like spun gold. It darkened at about 16. My grandmother was blonde as as a child, but her hair darkened so much that my aunt asked me. Why my grandmother dyed her hair so dark. She never dyed it at all.


27 posted on 09/25/2026 12:52:12 PM PDT by Eva
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To: SeekAndFind

My mother used say that my hair was like spun gold. It darkened at about 16. My grandmother was blonde as as a child, but her hair darkened so much that my aunt asked me. Why my grandmother dyed her hair so dark. She never dyed it at all.


28 posted on 09/25/2026 12:52:16 PM PDT by Eva
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To: SeekAndFind

Mines gotten lighter...white.


29 posted on 09/25/2026 1:44:38 PM PDT by maddog55 (The only thing systemic in America is the left's hatred of it!)
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To: SeekAndFind

Y friend’s daughter went from golden blonde to strawberry blonde and now auburn. She’s very beautiful and starting dating and he keeps a shotgun handy.


30 posted on 09/25/2026 2:35:55 PM PDT by Seruzawa ("The political left is the Garden of Eden of incompetence." -Marx the Smarter (Groucho.))
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To: AlaskaErik

My brother said that’s the best outcome. Either it gets darker, or it falls out!


31 posted on 09/25/2026 3:26:15 PM PDT by jocon307 (DEMOCRATS DELENDA EST)
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To: AlaskaErik

Dittos.


32 posted on 09/25/2026 4:23:15 PM PDT by Mr. Blond
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To: crusty old prospector

I suspect they got over in that regard. This would have been in the 1950s.


33 posted on 09/25/2026 4:53:44 PM PDT by Bigg Red (Deus vult!)
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To: SeekAndFind

When Mr FF and I met, we were teenagers. He was blonde, and remained blonde until a few years after our kids were born. Then as we got older, his hair darkened. I always think of him as blonde, but nobody else does. I do acknowledge that he has brown hair now. He’s still my sweet blondie though.


34 posted on 09/25/2026 6:11:04 PM PDT by FamiliarFace (I got my own way of livin' But everything gets done With a southern accent Where I come from. TPetty)
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To: SeekAndFind

It is very common for many children to start off with blonde hair who are not going to be natural blondes as adults. I always wondered why that was and what the evolutionary reason was for it. I still wonder why it is an evolutionary trait. Do parents treat blonde children better with more care? I don’t know.


35 posted on 09/25/2026 6:37:49 PM PDT by Freedom_Is_Not_Free (America -- July 4, 1776 to November 3, 2020 -- R.I.P.)
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To: SeekAndFind

I had blonde hair as a kid and then two tone blonde then later as I got older, a bit of salt n pepper then some grey. What I have noticed if I get some sun my hair becomes blonder and the grey is reduced and also if I change shampoos between the two I use with one used only occasionally.


36 posted on 09/25/2026 7:22:24 PM PDT by minnesota_bound (Making money now. Still want much more.)
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To: SeekAndFind

Hair today... Gone tomorrow and when it’s gone the colour doesn’t matter much.


37 posted on 09/25/2026 8:35:12 PM PDT by jerod (Nazis were essentially Socialist in Hugo Boss uniforms... Get over it!)
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To: SeekAndFind

Hair today... Gone tomorrow and when it’s gone the colour doesn’t matter much.


38 posted on 09/25/2026 8:35:12 PM PDT by jerod (Nazis were essentially Socialist in Hugo Boss uniforms... Get over it!)
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To: SeekAndFind

God created a few perfect heads. The rest he had to cover with hair.


39 posted on 09/25/2026 8:39:18 PM PDT by FatherofFive (We mutually pledge to each other our lives, our fortunes, and our sacred honor)
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To: FatherofFive
RE: God created a few perfect heads. The rest he had to cover with hair.

WE CONCUR !

40 posted on 09/25/2026 9:18:42 PM PDT by SeekAndFind
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