The clear soup is a big man!
I really washed my hair last night!!
Source: Tangerine Soda
Return to the south of the heavens as a mighty and blessed
It can be called an annual horror movie
It doesn't matter if you've just washed your hair
A trip out turns you into a walking steel wool ball
Source: Mary a bite of crisp
I just wanted to ask
This weather shampoos
1
It is to allow the hair to air dry naturally
Or is it "quick drying" with a hair dryer?
This is not a simple multiple-choice question, and it is also about the health of the hair.
1
Hair dryer to dry
(1) Damage to the hair
The hot air from a hair dryer can make hair dry, brittle, split ends, and brittle.
From the center to the periphery, the hair strands are the medulla, cortex, and cuticle.
Source: Tencent Medical Codex
The cuticle is actually a layer of epidermal cells that coat the surface of the hair like a small piece of armor, forming a protective barrier.
One of the characteristics of this layer of cuticle is that it is closed in the dry state, one by one, close together, but after encountering water, the cuticle is in an open state.
△ Cuticle of hair under electron microscope. Source: Wikipedia
In order for your hair to look good, you must first protect the outermost layer of cuticles, which are equivalent to the face of your hair. If the cuticle is intact and tightly closed, your hair will look healthy and shiny; If the cuticle is broken or not tightly closed, your hair will look dry and frizzy.
One of the characteristics of this layer of cuticle is that it is closed in a dry state, one by one, close to each other, and connected together, but after encountering water, the cuticle is in an open state, like a small mouth open towards the sky.
When we finish washing our hair, when the hair is still wet, use a hair dryer, when the hot air blows through the surface of the cuticle, it will blow the cuticle opening at a wider angle, then at this time, the moisture inside the hair will be taken away by the hot air faster, resulting in the hair losing moisture, and it will become dry over time.
The high temperature and strong wind generated by the hair dryer will also cause damage to the hair cuticle, which will not only not effectively protect the hair, but also damage the hair cuticle, and the hair surface will become rough, resulting in increased friction between the hair, which will further cause hair damage.
At the same time, high temperature will also destroy the disulfide bonds in the hair keratin, causing keratin to denature, which is the main reason why hair will become fragile and brittle after regular use of hair dryers.
At the same time, the pigment in the hair is also destroyed by high temperatures. Most of us yellow people have jet-black hair, and when the melanin in the hair is destroyed, the hair is prone to yellowing. That's why we see people who use hair dryers a lot and have some yellowish hair.
Source: Tencent Medical Codex
(2) Affect scalp health
The surface of our scalp is covered with a thin layer of stratum corneum, underneath which are abundant capillaries and nerve endings.
The stratum corneum is a protective barrier that can maintain the moisture balance of the scalp, block the entry of harmful substances such as dust and bacteria from the outside world, reduce infection and inflammation of the scalp, and also reduce the damage of ultraviolet rays, chemicals and other irritants to the hair follicles growing inside the scalp and maintain hair growth and health.
Diagram of the ecological structure of the scalp
When the hot air from a hair dryer blows onto the scalp, the heat accelerates the evaporation of moisture from the scalp surface, drying out the stratum corneum, which can lead to itching and scaling.
Prolonged or excessive use of hair dryers may damage the stratum corneum of the scalp and damage the barrier function of the scalp.
Prolonged heat stimulation can also affect the capillaries under the scalp, causing capillaries to dilate, making the scalp red and congested, and in severe cases, it may cause scalp inflammation, pain and burning.
Source: Sister Wow
(3) Easy to model
When hot air blows to the hair, the moisture in the hair is heated, evaporated, and the cuticle opens up, making the hair soft and malleable.
At the same time, when the hair is in a soft state after hot air heating, turn on the cold air mode of the hair dryer, which can quickly cool the hair, style the hair, and make the special shape more durable.
Source: Two Brains
02
Air dry
Many people like to take a shower before going to bed at night, and falling asleep with wet hair is not friendly to health, not only easy to catch a cold, but also affects the hair quality.
Because the cuticle of wet hair is open, it can be damaged by friction as the head moves during sleep.
In winter, if you are in a hurry to go out before your hair is dry, the sudden cold outdoor temperature will stimulate the scalp by the cold, causing problems such as colds or migraines;
It also causes the cuticle on the surface of the hair to close too quickly, making the hair brittle and brittle;
Cold winds blow away moisture from your hair, which can also make your hair drier.
Source: CC
02
Which way to blow dry your hair?
It mainly depends on your individual needs.
If you have a lot of time, don't need to do styling, and want to protect your hair and scalp as much as possible, natural air-drying is more suitable.
But if you're short on time, need to dry your hair quickly, or need to style your hair, then a hair dryer is undoubtedly a good helper.
Using a hair dryer once in a while will not cause much damage to your hair and scalp. What we need to avoid is the prolonged, frequent use of hair dryers.
Source: soogif.com
3
How to use a hair dryer correctly?
The recommended practices are:
Use a towel to gently absorb the excess water on your hair, be careful not to rub it vigorously, and wait until your hair is already semi-dry, and then use a hair dryer to complete the final drying or styling;
Or use a hair dryer for a while, stop using the hair dryer when it's still a little wet to the touch, and let the hair air dry.
Source: Sunny
In addition, there are 2 points to note:
(1) Try to use cool breeze and minimum wind force
Keep a proper distance, follow the principle of "the wind does not burn the skin", and avoid blowing on the same part of the hair and scalp for long periods of time.
(2) Blow dry the roots first, then the ends
Even if you blow the ends first, the water from the roots will still drip down the hair strands, and in the end, you will have to blow the ends again, causing secondary damage to the ends.
Everyone! Stop asking what baldness is
I have only 1 answer:
There's nothing wrong with it~ Bao!
Source: Internet (the original author cannot be found)
Source: Shenzhen Health Commission WeChat account