Notes

Can eating snacks containing niacin and drinking drinks containing nicotinamide whiten?
PQQ (Pyrroloquinoline quinone),

CNR Beijing, January 4, according to the news hyperlink of the voice of China of the Central Radio and television, recently, some beauty lovers found surprising ingredient labels - "nicotinamide" and "niacin" on the snack packaging.
Nicotinamide is the whitening and brightening ingredient of "net red" in skin care products in the past two years. Can it still eat? Eat snacks containing nicotinamide, can you harvest better whitening effect? Is it necessary to take nicotinamide tablets in order to improve the skin?
"Net red" whitening ingredients can still eat?
On the packaging of some drinks, biscuits and snacks, the words "nicotinamide" and "niacin" are marked in an eye-catching position. Some contain "nicotinamide" and "niacin" in addition to the sentence "niacin helps maintain skin and mucosal health".
Nicotinamide, the "net red" component in skin care products in the past two years, is an amide compound of nicotinic acid.
Can they rub on your face and eat in your mouth? Can it be good for the skin?
In fact, if we say vitamin B3, we may be more familiar with it.
Chen Xue, chief dermatologist of Beijing Tongren Hospital Affiliated to Capital Medical University, introduced that nicotinamide is a derivative of vitamin B3: "Nicotinamide is a B vitamin. If the human body takes insufficient nicotinamide vitamins, it will lead to skin diseases such as pellagra. Generally, it will cause abnormal skin and mucous membrane, such as dermatitis and cheilitis. In addition, it will also affect the digestive system and nervous system."
However, it is reported that usually, some special groups will suffer from niacin vitamin deficiency. For example, people with disordered intake of various nutrients caused by long-term heavy drinking.
What effect does nicotinamide have on the skin?
Chen Xue introduced that in clinical practice, nicotinamide can be supplemented for patients with deficiency through oral and external use, which plays a certain role in adjuvant therapy.
In the publicity of skin care products, nicotinamide is often linked with whitening, saying that it can "inhibit black and yellow, brighten skin color" and so on.
For the whitening effect of nicotinamide, Chen Xue said that it is also an auxiliary: "Research has confirmed that nicotinamide can prevent the transport of melanin from the body to keratinocytes. At the same time, it can also promote the body's metabolism, so as to accelerate the decomposition of melanin in the body, so that melanin particles can not be transported to the keratinocytes of the skin. However, the whitening effect of nicotinamide is actually auxiliary. The main means of whitening is sunscreen."
In addition, some people will say that a skin care product with high nicotinamide concentration seems to have better effect. However, in fact, if the nicotinamide concentration is higher than a certain range, it will stimulate the skin: "The general consensus reached in dermatology is that the concentration of nicotinamide added to cosmetics is generally not more than 4%. If it is greater than this value, skin irritation, redness and other skin intolerance will occur. According to the clinical experiment of scientific research, nicotinamide with a concentration of up to 10% will cause obvious irritation to the skin. Excessive nicotinamide is easy to cause skin surface corner The 'brick wall structure' of the qualitative layer is damaged, resulting in the destruction of the skin barrier. "
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