If your vitamin C serum is brown, is it still anti-aging? L'ADRIA Vitamin C Ritual Serum: new anti-aging test results
24/07/2025

Returning from vacation often brings visible consequences to the skin: dehydration, more pronounced fine lines, wrinkles and uneven skin pigmentation, which become a daily concern for many women and men. In a sea of products promising a youthful appearance, the L'ADRIA Vitamin C Ritual serum stands out with its innovative approach, effectiveness and clear message: "If your vitamin C serum is brown, it may not be anti-aging anymore."
First of all, with this message, L'ADRIA directly addresses the most common problem with vitamin C serums - their instability and often associated ineffectiveness, short shelf life and poor user experience. Of course, you shouldn't panic if your serum darkens a little - but if it has darkened significantly and has been open for a long time, it's probably time for a new one. If you don't want to throw away unused products, it might be time to try L'ADRIA Vitamin C Ritual . Here's why.
There are many forms of vitamin C on the market, but L-ascorbic acid, or the original form of vitamin C, is considered the most effective because it has been proven to penetrate the skin to the point of action, and its effectiveness is supported by the most clinical studies. Other vitamin C derivatives have their place on the shelves of skincare products, but they actually have many drawbacks: they simply are not pure vitamin C like L-ascorbic acid, so they need much higher doses to work, they do not necessarily penetrate the skin layer where they should, and they do not convert into the original form of vitamin C during application. In short, they are not as effective as pure vitamin C. So, if you are looking for the best anti-aging effect from a vitamin C serum, choose a serum that has ASCORBIC ACID in the list of ingredients, at a minimum dosage of 10%. However, there is a problem. Although L-ascorbic acid is the most effective form of vitamin C, it is also very unstable. When exposed to air, heat, or light, this form of vitamin C oxidizes very quickly, which is clearly visible by the change in color of the serum from clear or light yellow to dark yellow, orange, or brown. This change is not just an aesthetic problem: oxidized vitamin C loses its antioxidant power and effectiveness.
Since it often takes a long time for the anti-aging effect to be noticeable, vitamin C products need to be used continuously for a long period of time. The problem arises when the product loses its effectiveness during application due to the oxidation of vitamin C, so the results deteriorate over time, and the user experience becomes unpleasant because suddenly the serum starts to change color and you are not sure if you can still use it. You may have heard that the color change of vitamin C serum is normal, perhaps the short shelf life of 2-3 months after opening is acceptable to you, perhaps you store your vitamin C serum in the refrigerator as recommended. And maybe it is time to try something different if you think that the color change of the serum is not normal and not desirable, and storing it in the refrigerator is impractical. In that case, L'ADRIA recommends a vitamin C serum that will not disappoint you in terms of effect or in terms of the experience of use: L'ADRIA Vitamin C Ritual. It is stable and effective for 12 months after opening, so there is no need to worry about not using it in time, it does not change color even though it contains 10% L-ascorbic acid, and it should not be refrigerated, but kept at room temperature.
Results of testing the anti-aging effect of L'ADRIA Vitamin C Ritual
Unlike many vitamin C products, whose effectiveness often decreases due to instability and oxidation, L'ADRIA Vitamin C Ritual serum is based on a dual formula that ensures the stability and freshness of the most effective form of vitamin C until the moment of application, when the vitamin C is activated. Its effectiveness was tested on 35 subjects in an independent study based on the subjective assessment of real users with different skin types who used the product for a month or more, and the results are:
· 80% of participants noticed a reduction in fine lines and smoother skin texture
· 71.4% of participants reported that deep wrinkles were reduced after using the product
· 91.4% of participants said their complexion improved after using the product
· 91.4% of participants noticed an improvement in the overall appearance of their skin after using the product
· 88.6% of participants said their skin looked brighter and more even after using the product
· 74.3% of participants noticed a reduction in visible pores after using the product
· 97.1% of participants said their skin texture appeared smoother after using the product
· 91.4% of participants noticed that their skin had a radiant effect after applying the product
· 88.6% of participants said the product soothed their skin after the first day of use
· 83.3% of participants noticed a reduction in visible redness one day after applying the product
In conclusion, L'ADRIA Vitamin C Ritual Serum is a valuable product for the care of mature skin, skin with fine lines or deep wrinkles, skin lacking a healthy glow and radiance, skin with an uneven complexion, skin with redness, enlarged pores, rough texture or dehydration.
Encouraged by the excellent results of the testing based on the subjective assessment of real users of the serum, but aware of the limitations of the small sample size and the possibility of a placebo effect, L'ADRIA decided to further test the product with instrumental methods for determining the condition of the skin in order to objectively prove the efficacy of the product. The study is ongoing and is being conducted with the Antera 3D® camera for digital skin analysis, the VisioFace® RD camera for standardized dermatological photography and the special Visioscan VC 20plus camera for skin microtexture analysis.
Glow, youthful radiance and hydration
One of the most sought-after aesthetic effects today is the so-called "glow" - a radiant, healthy and youthful appearance of the skin. L'ADRIA Vitamin C Ritual serum has multiple effects: it stimulates collagen synthesis, evens out the complexion and restores the skin's natural fullness and radiance. Moisturizing components provide long-lasting moisture, which further contributes to a fresh and fuller appearance of the skin.
Minimal risk of irritation, maximum effectiveness
Unlike many serums with a high content of L-ascorbic acid, the L'ADRIA Vitamin C Ritual serum contains soothing additives such as panthenol, ectoine and peptides. This makes it suitable for daily use on the face, neck and décolleté. Since a slightly acidic pH value of the product is required for optimal penetration of pure vitamin C into the skin, it is very important that products with L-ascorbic acid reduce the possibility of irritation from acidity, which L'ADRIA succeeded in according to the test results: 88.6% of the participants noticed soothing effects after the first day of use, and 83.3% of the participants noticed a reduction in visible redness on the face one day after applying the product. In conclusion, an exceptionally good effect was achieved in soothing the skin and reducing redness. The gentleness and soothing properties of the product allow for long-term use on all skin types.
Method of use and daily routine
The serum is used by mixing an equal amount of both phases (a pea-sized amount) in the palm of your hand, then applying to clean, dry skin on the face, neck and décolleté. The product does not leave a greasy residue and can be used morning or evening, as part of an anti-aging routine or to restore skin after sun exposure.
Why L'ADRIA Vitamin C Ritual?
Powerful anti-aging effect: Vitamin C has been proven to be one of the most powerful antioxidants in the fight against the signs of aging. With regular use, it stimulates collagen synthesis, reduces the visibility of fine lines and wrinkles, and restores skin elasticity and firmness.
Radiant and youthful glow: The serum effectively brightens the complexion, evens out the complexion and reduces imperfections, resulting in a healthy, radiant complexion.
Hydrated, plumped-up skin: The formulation with vitamin C and additional moisturizing components helps restore the hydrolipidic barrier, increases moisture retention and gives the skin a plumper and fresher appearance.
Dermatologically tested: independent dermatological testing and user efficacy evaluation tests confirmed that the serum is compatible with the skin and is effective in reducing fine lines and wrinkles, improving hydration and restoring youth, with minimal risk of irritation.
L'ADRIA Beauty Combination
How to use vitamin C serum all year round.
Spring: L'ADRIA Vitamin C Ritual + Restorative Mist
Sea Bloom Ritual
In spring, the skin requires additional hydration and protection from the first strong rays of the sun. After cleansing with L'ADRIA Hydrating Cleanser , apply L'ADRIA Vitamin C Ritual serum in the evening, whose innovative two-phase formula with 10% stable vitamin C, vitamin E, astaxanthin and powerful moisturizing ingredients (panthenol, ectoine, sea lavender, hyaluronic complex) restores skin radiance, evens out complexion and reduces fine lines and wrinkles.
Throughout the day, refresh your face with L'ADRIA Restorative Mist, rich in sea lavender, niacinamide and squalane, which instantly restores moisture and soothes sensitive or irritated skin.
Summer: L'ADRIA Vitamin C Ritual + Sun fluid SPF 50+
Sun Guard Glow
In summer, UV protection is essential. In your evening routine, continue with the L'ADRIA Vitamin C Ritual serum, which neutralizes free radicals and helps the skin recover from the sun. In the morning, be sure to apply L'ADRIA Sun fluid SPF 50+ , a light fluidity without white marks and a greasy feel, enriched with a moisturizing-antioxidant complex of algae and Adriatic herbs, which provides high protection and additionally nourishes the skin. This combination preserves youth and prevents the appearance of new wrinkles and fine lines, loss of elasticity and skin tone, and the appearance of hyperpigmentation.
Autumn: L'ADRIA Vitamin C Ritual + Rejuvenating Oil
Skin Revival Duo
Autumn is ideal for skin renewal after summer. In your evening routine, after L'ADRIA Vitamin C Ritual serum, apply a few drops of L'ADRIA Rejuvenating Oil , which contains algae oil rich in omega-3 fatty acids and bakuchiol - a natural, gentle alternative to retinol.
This combination intensively restores the skin barrier, reduces wrinkles, improves texture and restores elasticity, and is also suitable for oily and acne-prone skin thanks to the purifying effect of the oil.
For additional hydration and renewal, especially for dry or mature skin, combine it with L'ADRIA regenerative cream.
Winter: L'ADRIA Vitamin C Ritual + regenerating cream
Winter barrier reinforcement
In winter, skin often becomes dry and sensitive due to cold and heat. Continue using L'ADRIA Vitamin C Ritual serum 2-3 times a week in the evening, and then use L'ADRIA Regenerative Cream enriched with marine collagen and algae, which further strengthens the barrier, prevents moisture loss and makes the skin more resistant to external influences.