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Vitamin C in cosmetics: a super antioxidant!

Whether it is an antioxidant or an immune system booster, vitamin C, also known as ascorbic acid, plays an essential role in the proper functioning of our body. But what is its effect on the skin?

Vitamin C is not naturally present in your body!

Did you know that? Humans are unable to synthesize vitamin C, in fact we have lost the ability to produce the enzyme necessary for its production. It is therefore obtained from food sources such as citrus fruits and green leafy vegetables.

However, the absorption of vitamin C taken orally is quite limited. Topical application of vitamin C is therefore essential to take advantage of its cutaneous properties.

Better understand the effect of vitamin C on your skin!

Skin aging is mainly due to free radicals that accumulate in the skin.

Indeed, when the skin is exposed to ultraviolet light, reactive oxygen species (ROS) are released. In order to protect itself from these ROS, the skin is equipped with a complex enzymatic and antioxidant system. Among these antioxidants is the famous Vitamin C.

How does vitamin C fight against these free radicals?

It is a water-soluble vitamin capable of neutralizing free radicals present in the aqueous compartments of the cell by releasing electrons.

Anti-ageing role!

Collagen production gradually decreases as we age, however certain factors such as sun exposure and smoking can cause a premature reduction in collagen production. This leads to the development of wrinkles.

Vitamin C plays an essential role in collagen biosynthesis. In fact, it acts as a cofactor for enzymes capable of stabilizing collagen cross-linking. Vitamin C can also directly stimulate collagen synthesis and even preserve existing collagen.

Anti-inflammatory properties!

In addition to its anti-aging properties, vitamin C is known to be a powerful anti-inflammatory. Indeed, it acts by suppressing the activation of factors responsible for the production of pro-inflammatory cytokines. This is why topical application of vitamin C can be useful in the treatment of various inflammatory dermatoses, including post-laser application.

Effect against hyperpigmentation!

Ascorbic acid can also act on the production of melanin which is, in a simplified way, the element responsible for the color of our skin.

This will allow the vitamin C to fight against sun spots and acne marks or even melasma (a skin condition characterized by the appearance of brown spots on the skin).

What about sun protection?

Yes, vitamin C can also protect the skin from the sun. Be careful, it is not a sunscreen and will not protect your skin like a screen but because of its antioxidant properties, vitamin C absorbs the skin damage caused by UV rays in your skin. UV rays are responsible for the production of free radicals.

Forms of vitamin C in cosmetics!

Does it matter what form of vitamin C we apply to our skin? Yes, this is a complex issue.

Indeed, the first products contained vitamin C in the form of L-ascorbic acid, these formulations were unstable due to the susceptibility of this form to oxidation in solution. When the formulations are exposed to air for a long period of time, a yellowish coloration occurs resulting from the formation of a by-product.

So, the vitamin C in your products is usually in an inactive form that will be converted to an active form once applied to the skin.

Among these different forms of vitamin C are ascorbic acid, which is the most common form, and fat-soluble esters of vitamin C, including ascorbyl-6-palmitate and magnesium ascorbyl phosphate.

Natural Vitamin C Vs synthetic, What is the difference?

Synthetic vitamin C, found in most skin care products, is usually in the form of L-ascorbic acid. It is also found in the form of calcium ascorbate, magnesium ascorbate, sodium ascorbate, sodium ascorbyl phosphate etc.

In contrast, naturally occurring vitamin C is generally found in citrus fruits, berries and vegetables. It also contains powerful phytonutrients making it incomparably powerful.

In terms of chemical structure, the natural vitamin C is similar to the synthetic one,

Clinical studies show that naturally occurring vitamins can be even more potent*.

Vitamin C by season!

No matter what the season, your skin and your body always need vitamin C. It's THE booster we all always need.

Winter is the time when we are most susceptible to infections. The consumption of fruits and vegetables rich in vitamin C will be essential to boost our immune system. Choose vegetable soups containing potatoes as well as kiwi and passion fruit!

As soon as the sun's rays appear, vitamin C will be there to protect your skin against UV rays.

Spring and summer are the seasons for fruits and vegetables!

In summer especially, it is the season of red fruits, including cherries! And for vegetables, it's cucumbers, artichokes and avocados.

Fruits and vegetables rich in Vitamin C :

Although oral vitamin C will have little effect on your skin, it is still essential for your health.

Did you know that? Oranges are not the richest fruit in vitamin C!

Yodi takes care of you, so here are the fruits and vegetables richest in Vitamin C:

Yodi tips!

  • You can apply vitamin C in the morning and/or evening. However, in the morning you will benefit more from its sun protection properties.
  • Vitamin C is not photosensitizing. On the contrary, it reduces sensitivity to UV rays.
  • Try incorporating a naturally derived vitamin C into your skincare routine.
  • Choose foods rich in Vitamin C, even if they have little effect on the skin. Your health is also important to us.

The Yodi routine!

We recommend our 100% vitamin and antioxidant routine without preservatives. It's a combination of the Vitamine C et fleurs d’Hibiscus cleanser with the precious Muesli & Pure Vanilla oil.

Our face wash is enriched with Ascorbyl Glucoside, a natural stabilized vitamin C derivative that brightens skin tone and reduces the appearance of spots.

This vitamin C derivative has a stability that resists discoloration and degradation while retaining full biological activity that provides brightening, anti UV and anti aging properties. Our cleanser contains 2% vitamin C and will therefore be able to lighten the skin and reduce hyperpigmentation.

In fact, a clinical study conducted on 60 women volunteers showed that a product formulated with 2% Ascorbyl Glucoside increased the luminosity of their skin significantly after 2 months of use.

And that's not all! You can also use our precious oil composed of a mixture of nourishing oils and pure Vanilla, enriched in Vitamin E which itself fights against the free radicals responsible for skin aging.


Farris, P. K. (2005). Topical vitamin C: a useful agent for treating photoaging and other dermatologic conditions. Dermatologic surgery, 31, 814-818.

*Burton, G. W., Traber, M. G., Acuff, R. V., Walters, D. N., Kayden, H., Hughes, L., & Ingold, K. U. (1998). Human plasma and tissue alpha-tocopherol concentrations in response to supplementation with deuterated natural and synthetic vitamin E. The American journal of clinical nutrition, 67(4), 669-684.

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