Why can onions grow hair?
Onion is the only vegetable found to contain prostaglandin A at present. Prostaglandin A can dilate blood vessels, promote scalp blood flow and strengthen the nutritional supply of hair follicles. In addition, onions are rich in sulfide, selenium and vitamin B, which are the favorite nutrients for hair. Quercetin in onion can also reduce cell oxidation, improve endocrine disorders and help maintain a good internal environment for hair growth. Therefore, onion has a good nourishing effect on scalp cells whether it is taken orally or externally, and the key raw materials are convenient and cheap.
Can onion juice grow hair?
Rubbing onions is a hair tonic abroad. From some data, it can be said that most people abroad recognize the role of onions in hair growth, but few people in China know about it!
Several methods of onion hair growth
1, directly wipe the scalp with onion juice. This method is actually a bit similar to wiping the scalp with ginger, both of which can stimulate the growth of hair follicles. The role of onion is actually more clear than that of ginger, because it has been scientifically proved that prostaglandin A in onion can dilate blood vessels and improve blood circulation, which is undoubtedly equivalent to strengthening the nutrition of hair follicles and stimulating hair growth, similar to the role of minoxidil. There is an investigation on the growth of onion juice in a foreign journal of dermatology. Participants suggested that patients with alopecia areata wipe their scalp with onion juice twice a day. During these six weeks, 87% of the participants thought their hair had regrown.
2, direct consumption of onions, even if onions are directly used as food, it is also good for hair. Onions are not only rich in vitamins, but also rich in selenium, which is also an essential trace element for hair growth, and there are not many sources in food. Quercetin in onion can reduce cell oxidation, improve endocrine disorders, and help maintain a good internal environment for hair growth.
3, onion juice shampoo, belonging to the old folk prescription, wrap a mashed onion with sterilized gauze, then gently rub the scalp repeatedly, let the onion juice fully penetrate, and finally wash it off with warm water, which can relieve itching and dandruff, and has the effect of hair growth. Because onion contains sulfide, flavonoids and other ingredients, it has a significant bactericidal effect. Onion contains carotene, vitamin B 1, vitamin B2, vitamin C, vitamin E and other nutrients, which has a nourishing effect on scalp cells.
How to grow hair with onions
Wash the scalp with onion juice.
Dragon TV has also introduced this method, which directly rubs the scalp with onions to promote scalp blood circulation and stimulate hair follicle growth. After allowing it to fully penetrate for 30 minutes, wash it with warm water, which can not only sterilize and remove debris, but also help growth. The detailed steps are as follows, just follow them!
Step 1: Take out an onion, prepare a bowl or other container, and plant the onion in your container with a grinder. Of course, it would be better if there was a blender or juicer.
Step 2: With one finger, apply onion juice to the scalp, along the hairline, and apply it to the parts you think need to be improved. Massage with your fingers when applying, and the effect will be doubled.
Step3: Let the onion juice stay on the scalp for 30~40 minutes and make full contact with the scalp.
Step 4: Wash off with clear water. The remaining onion juice can be collected and used next time. You can make it 1~3 times a week.
Be careful all the time, treat it as a care product, and do it 1~3 times a week. Don't be disappointed if your hair doesn't improve obviously the next day. After all, it takes more than half a month for hair to grow. Stick to it for a month or two and look back. The effect will definitely surprise you!
What nutrients do onions contain?
Onions are nutritious. According to the determination, every 100g of fresh onion contains about 88g of water, protein 1 ~ 1.8g, 0.3-0.5g of fat, 5-8g of carbohydrate, 0.5g of crude fiber and 0/30kj of heat. Vitamin c14mg, nicotinic acid 0.5mg, riboflavin 0.05mg, thiamine 0.08mg, carotene1.2mg.
It also contains caffeic acid, sinapic acid, cinnamic acid, citrate, polysaccharide and various amino acids. The volatile oil is rich in allicin, mercaptan and trisulfide. Buds, pollen and anthers all contain carotene.
The tear-causing component of onion is cyclic alliin, and S- propenyl -L- hemiglycine hydrosulfide contained in onion is the precursor of cyclic alliin, which can be cyclized into cyclic alliin under alkaline conditions.