Where does hair grow the fastest or slowest – on your head or body?
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Where does pilus grow the fastest or slowest – on your head or body?
CNA Lifestyle asks the experts some hair-raising scientific questions you've ever thought about. Like 'Why practise one-time people have bushy eyebrows?' and 'how long tin can armpit hair grow?'
(Art: Chern Ling)
14 Feb 2022 06:30AM (Updated: 13 Aug 2022 01:20AM)
Regretted the time y'all got a fringe to expect like Zooey Deschanel and ended up more like Helga Pataki from Hey Arnold? Or conversely, what about that time you had a few sessions of IPL hair removal treatment and even so came out looking like Cousin Information technology?
We've all had our moments when we wished our hair grew dorsum faster or not at all. Unfortunately, hair growth is a very fickle affair – depending on where it is on your body and fifty-fifty your age and gender.
To get into the, ahem, root of the affair, CNA Lifestyle asked some hair experts some hair-raising questions yous might be curious nearly.
READ: Go out of the grey area – and how to brand the virtually of your grey hair
WHAT'S THE Departure Betwixt HAIR ON YOUR HEAD AND EVERYWHERE ELSE?
Kickoff up, all hair grows at an boilerplate rate of about 0.3mm a day, said Dr Calvin Chan from Calvin Chan Aesthetic & Laser Dispensary. The difference between head and body hair is the duration of their growth.
Pilus on the underarms, legs and pubic areas stops growing after 3 to vi months. And even if you've never shaved at all, there's a limit to the length, ranging from two.7cm to 5.4cm long.
Meanwhile, the hair on your caput continues to grow for much longer – two to six years – before stopping, said Dr Eileen Tan, a dermatologist from Eileen Tan Pare Clinic & Associates at Mount Elizabeth Novena Hospital.
WHY DOES YOUR FRINGE SEEM TO GROW OUT SLOWER (OR FASTER) THAN OTHER PARTS OF YOUR HEAD?
It might merely be psychological or visual trickery. If you're growing out your fringe, it may appear to lengthen slower than you wish. Conversely, if you find information technology a chore to trim your fringe every and then oft, information technology "may seem to grow faster considering y'all are paying close attention to its growth", said Dr Chan.
But no amount of wishing will change the fact that hair grows at the same average rate of barely 1cm a calendar month, regardless of whether it's at the front, dorsum or side of your caput. That said, he pointed out that every follicle grows independently.
"It's affected past factors ranging from genetics to hair blazon, and hormones to mechanical actions like tugging and physical stress."
READ: Those eyelash extensions you love wearing may have leaner and fungi
And as for the idea that trimming hair actually encourages faster hair growth, Dr Tan said you should forget about that technique. It'll remove the dry, breakable pilus ends and reduce pilus breakages only that'southward nigh it, she said.
Tin can HAIR GROW FASTER OR THICKER ON ONE SIDE?
The jury is notwithstanding out on this one but some believe that this has to practice with you favouring your ascendant hand and arm for your daily activities. And considering one side of your body gets more movement and exercise, the circulation may be more than robust. For example, if you're right-handed, the hair growth in your right armpit may be faster and thicker than the left.
But Dr Tan said: "There is no scientific evidence that I could find in medical literature to prove that hair on the ascendant side grows faster and in greater number. I have not observed this phenomenon in my patients either so far."
Your fringe may seem to grow faster because you are paying close attention to its growth.
On the contrary, if you observe pilus on one side of your caput getting thinner or breaking, you might be brushing or combing that side a little likewise hard with your dominant paw, peculiarly when y'all're simply out of the shower. "When clammy pilus is combed, it stretches and is unable to snap back into shape like a condom band, thereby breaking," said Dr Chan.
His tip: Let hair air-dry out naturally. If you must comb information technology when it'south wet, use a smoothen, wide-toothed comb to lessen tugging.
IS IT Truthful Hair GROWS FASTER IF YOU'RE Male person AND UNDER 30?
"The rate of pilus growth is probably a outcome of evolution and genetic brand-up," said Dr Tan. "Stalk cells, which developed from the embryonic stage, will orchestrate the cellular bicycle and turn-over time."
On average, "people lose around fifty to 100 hairs from their torso every 24-hour interval every bit office of the normal pilus growth bicycle," she added.
However, there are some factors that may speed things up a flake, co-ordinate to London'southward The Trichological Lodge. For instance, men's pilus – both on the body and head – grow faster than women'south. Your age also plays a function; hair grows fastest betwixt the ages of 15 and thirty, before slowing down or even stopping growth altogether.
READ: Avoid having a bad pilus day with these handy spray products
WHY DO Sometime PEOPLE SEEM TO HAVE LONGER, BUSHY EYEBROWS?
Older men and women do not necessarily grow longer eyebrows. It'southward really more than nigh their skin than hair growth, said Dr Baiju Gohil, a The states lath-certified surgeon from Robotic Pilus Restoration Long Island. "As we age, skin sags and loses its fullness, making the eyebrow hairs appear longer, even though they are the same length".
Having said that, hair also grows differently as we age, he added. "The keratin inside each pilus is non arranged as precisely as we get older, allowing keratin fibres to bend more than easily than they used to. These more flexible hairs are not aligned with the others anymore in their usual eyebrow germination, and become more than visibly apparent."
Furthermore, your hair becomes more sensitive to hormonal changes, especially testosterone, every bit you historic period. "After menopause, oestrogen levels in women decrease, and the influence of naturally occurring testosterone in females is not counteracted, which may atomic number 82 to more pronounced eyebrow hair," said Dr Gohil.
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Source: https://cnalifestyle.channelnewsasia.com/wellness/hair-growth-how-fast-head-body-armpit-legs-196151
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