Side effects of niacinamide on the skin

For those who love beauty and know how to protect their skin, niacinamide is no stranger. It is a very commonly used skin care product and is widely used in skin care and makeup products such as oil control, moisturizing and whitening. However, many friends have reported that products containing niacinamide have some side effects after use, such as increased hair or redness of the skin. It can be said that everything has two sides. On the one hand, niacinamide improves the skin, but on the other hand, it also causes damage to the skin.

1. Niacinamide

Niacinamide, also known as VB3, is an important member of the vitamin family. Research history of niacinamide: As early as 1974, Girish Parsad Mathur et al. in the UK first discovered that 1-5% niacin and 1-4% sunscreen can be compounded into a cream system to achieve the effect of whitening the skin. Its mechanism of action is: niacin can activate cyclic 3,5-nucleotide phosphodiesterase, which can break down 3,5-cyclic adenosine monophosphate that stimulates melanocyte hormone into adenine-5-monophosphate, thereby reducing the production of melanin.

2. Side effects of niacinamide on the skin

Everything has its pros and cons. Niacinamide also has its shortcomings. The most important point is that the impurity niacin in its raw materials can cause skin irritation. Some consumers may experience allergic reactions such as redness when using products with high niacinamide content. This is the niacinamide intolerance issue that everyone likes to talk about. Therefore, the use of niacinamide in cosmetics requires strict control of raw materials and impurities, and the formula design and process also have an impact on this. In this area, many companies have conducted more in-depth research and have launched a number of mature products.

1. Niacinamide causes skin redness

I don't want to repeat the explanation about redness, as many people have said it but I don't like to repeat it. In a nutshell, if you have sensitive skin or very dry skin, and the sebum membrane is not sound or the skin tolerance is not high enough, the irritation of niacinamide itself is likely to cause redness and allergies, or even...swelling.

The adults’ advice to sensitive girls is that before using niacinamide, try it on the back of your hand or behind your ear. If there is no redness, allergy or stinging, then use it on your face.

Also, don't try to do everything at once. The tolerance level of niacinamide needs to be built up little by little. You can try using 1%-2% concentration first, then add 1% after one week, 1% after two weeks, 1% after three weeks... and so on. Girls who don't want to buy various concentrations can first add the essence to the cream or lotion and mix them together.

2. Niacinamide stimulates the skin, promotes metabolism, and accelerates hair growth.

Normally, people cannot grow new hair follicles, which are the skin cells that make hair grow. All hair follicles are born with humans and accompany them throughout their lives. Hair follicles cannot regenerate after death. In other words, no matter how much niacinamide stimulates, there will be no new "pits" for the hair "carrot" to reproduce. In other words, your hair will only grow in the "pits" that you have had since birth, and the number will not increase.

One of the functions of niacinamide is to promote metabolism. That is to say, it can stimulate the metabolic rate of your epidermis, which can also promote hair growth. In other words, it's just that your original hair has been made a little taller by this "growth hormone"-like thing.

3. Effects of Niacinamide

1. Accelerate metabolism and promote the shedding of keratinocytes containing melanin

2. Act on the melanin that has already been produced and reduce its transfer to the surface cells

3. Promote the synthesis of epidermal protein and improve skin texture