Is it true that taking niacinamide and vitamin C together is dangerous?

Stimulating with niacinamide and vitamin C?

Niacinamide and Vitamin C are both popular beauty ingredients. They are used in many cosmetics for their various effects, such as reducing skin inflammation and whitening the skin.

On the other hand, you may come across information like this:

" Combining high doses of vitamin C and niacinamide is dangerous"
"Using vitamin C and niacinamide together can easily cause irritation."

But is this really true?
In this article, I would like to verify this.

About Vitamin C: Is Vitamin C serum too harsh for sensitive skin?

What is Niacinamide?

Before we examine the combination of these two ingredients, let's briefly explain what each ingredient is.

Firstly, niacinamide.

Niacinamide, a type of vitamin B3, is expected to have the following skin-beautifying effects :

• Increased moisturizing power
• Reduces pigmentation
• Evens out skin tone
• Addresses signs of aging
• Works on pores
• Regulates sebum secretion to relieve acne
• Reduces facial redness

In addition, the American EWG, which evaluates ingredients for safety, has rated it as highly safe . In addition to its pleasing beauty effects, it is also safe. It's a fascinating beauty ingredient.

The Effects of Vitamin C

Next, let's talk about Vitamin C. The antioxidant effect of Vitamin C is well known, but the specific effects that can be expected on the skin are as follows:

• Promotes collagen production to firm skin
• Brighten the skin (improve dullness)
• Reduces inflammation
• May fade scars caused byacne or skin damage

Niacinamide and Vitamin C can be used together

Rumor has it that these two ingredients shouldn't be used together!
The answer is, don't worry about it.

This means that it is safe to use niacinamide and vitamin C together.
In fact, the two ingredients may complement each other and may even be more effective when used together.

So why is there information that says "Don't use them together!?"

It's most likely based on old research from the 1960s.

Back in the 1960s, several studies combined high concentrations of niacinamide with a form of vitamin C called ascorbic acid at very high temperatures. The studies showed that combining high concentrations of both ingredients at high temperatures formed nicotinic acid, which can irritate the skin.

Generally, cosmetics are stored and used at room temperature.
Therefore, using niacinamide and vitamin C together in your skin care routine does not pose the risk of producing nicotinic acid.

However, be careful with high concentrations

Clinical studies have shown that up to 10% niacinamide does not irritate the skin, and up to 5% niacinamide does not cause any discomfort to most people.
On the other hand, if the concentration is any higher, there is a possibility that more people will experience skin irritation.

It is also not uncommon for vitamin C to be found in high concentrations, such as 25%, in commercially available cosmetics.
However, the higher the concentration, the more irritating it tends to be to the skin.

Choosing a product that contains a high concentration of ingredients just because they are good for your skin may actually cause problems.

If either of these products does not suit your skin, it can cause redness, itching, and inflammation. People with sensitive skin in particular should keep an eye on their skin condition while aiming for beautiful skin.