1, salt water shampoo can inhibit oil secretion, clean oil and prevent pore blockage.
2, salt water shampoo can play a role in inhibiting hair loss, sodium salt in salt water can adjust the water-electrolyte balance of scalp, reduce the stimulation of androgen on hair follicles, and inhibit the onset of metabolic disorders.
3, salt water shampoo can also play a role in dandruff, because most dandruff is caused by fungal infection, salt water can play a role in sterilization and dandruff.
Second, the shortcomings of salt water shampoo:
After washing your hair with salt, the grease on your hair will be washed away. Without nutrition, hair will rust together and look unattractive. So after washing your hair with salt water, wash it again with shampoo.
/iknow-pic . cdn . BCE Bos . com/BF 096 b 63 f 6246 b 60 e 5 E4 d 4 ade 7 f 8 1 a4c 500 fa 205 " target = " _ blank " title = " " class = " ikqb _ img _ alink " & gt； /iknow-pic . cdn . BCE Bos . com/BF 096 b 63 f 6246 b 60 e 5 e 4d ade 7 f 8 1 a4c 500 fa 205？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ BF 096 b 63 f 6246 b 60 e 5e 4d 4 ade 7 f 8 1 a4c 500 fa 205 "/>；
Salt in seawater comes from rocks and soil on land. 4.6 billion years ago, when the earth was just born, the sea water was very light, but there was a lot of salt in rocks and soil. Later, because of the strong movement of the earth's crust, the volcano erupted and formed a lot of water vapor, so it rained all the time. Salt will dissolve in water, and the salt dissolved in water will be washed into the river by rain, and then slowly flow into the sea with the river. In this way, the sea water stinks. According to scientists' estimation, the salt that flows into the sea through rivers every year is as high as 65.438+0.9 billion tons.
Why is the river not salty? That's because the river has been moving relative to the ocean, and the salt content in the river is not much. After the river flows into the sea, it can't dilute the salt in other ways as it does into the sea. After the sun shines, the seawater evaporates continuously, which makes the salt content of seawater more and more.
References:
/baike.baidu.com/item/%E7% 9b% 90/548739 "target =" _ blank "title =" Baidu Encyclopedia-Salt "> Baidu Encyclopedia-Salt