All Topics
Fréquence d'utilisation vitamine C.

When and how often should Vitamin C be used?

For several years now, vitamin C has been gaining popularity. This acid can be found in various types of skincare products: creams, lotions, serums... When applied topically, thanks to its antioxidant properties, it effectively combats oxidative stress, which is responsible for the accelerated aging of the epidermis. In this article, you will find information on its frequency of application and the optimal times of day to use it.

Vitamin C, what benefits does it have for the skin?

Vitamin C or L-ascorbic acid is essential for the proper functioning of our body. However, our body does not produce it. It is necessary to supply it to the body through diet (many fruits and vegetables contain it).

When applied topically, it is full of benefits and impacts several parameters.

  • It stimulates the production of collagen, a fibrous protein found in the dermis and essential for skin firmness.

  • She battles against oxidative stress generated by the free radicals and thus slows down the appearance of aging signs.

  • It possesses excellent lightening properties. Indeed, it inhibits tyrosinase, an enzyme responsible for the conversion of the amino acid tyrosine into melanin, thereby reducing pigmentation.

  • Vitamin C reduces redness and irritation due to its anti-inflammatory and antioxidant properties.

When is the best time of day to use a Vitamin C skincare product?

There are no contraindications to using a vitamin C skincare product in the morning. This substance is photosensitive (it oxidizes in light) and not photosensitizing (it does not increase skin sensitivity when exposed to the sun). On the contrary, it is relevant to apply a vitamin C skincare product in the morning as this active ingredient will neutralize the production of free radicals generated by several external factors such as pollution, the sun, cigarette smoke...

This active ingredient can also be incorporated into your evening beauty routine, to effectively combat spots, restore radiance to the complexion, and provide a comprehensive regenerative action to the skin.

The frequency of use of our products concentrated in Vitamin C.

Depending on the concentration of vitamin C in a skincare product, it is typically used either as a treatment for a few weeks or as a daily care over a longer period in a beauty routine.

To combat the signs of aging, opt for a treatment with a high concentration of Vitamin C (at least 10%). Ourwrinkle and firmness loss serumis made up of 99% naturally derived ingredients and contains plant-based collagen (1%) as well as Vitamin C (10%). To use this serum, apply 3 to 4 drops to a previously cleansed and dried face morning and evening. Gently massage the face and neck with circular movements. Then apply a moisturizer suitable for your skin type. We recommend using this serum for at least 6 weeks to see its effects.

Our brightening serum is a true radiance booster that helps combat dull complexion. It is used morning and evening, during a 4 to 6 week treatment.

The antioxidant face cream contains less vitamin C and can be incorporated into a daily beauty routine, over a longer period of time. It can be applied morning and evening, on a clean and dry face and neck.

The brightening toner serves to rebalance the skin's pH after cleansing and to remove limestone residues on its surface. Like the cream, it can be incorporated into a daily skincare routine, over a long period and is used morning and evening.


  • CHIANG N. & al. Topical vitamin C and the skin: Mechanisms of action and clinical applications. Journal of Clinical and Aesthetic Dermatology (2017).

  • VISSERS M. C. M. & al. The role of vitamin C in skin health. Nutrients (2017).

  • TRICAUD C. & al. Vitamin C prevents ultraviolet-induced pigmentation in healthy volunteers: Bayesian meta-analysis results from 31 randomized controlled versus vehicle clinical studies. Journal of Clinical and Aesthetic Dermatology (2019).

  • VOSS W. & al. A Collagen supplement improves skin hydration, elasticity, roughness, and density: Results of a randomized, placebo-controlled, blind study. Nutrients (2019).


Understand your skin
and its complex needs.