I recently had the chance to try out this Vitamin C Serum that I received a while ago. I’m about halfway through the bottle, and I can confidently say that it’s one of the best Vitamin C Serums I’ve used. Not only did it brighten my skin, but it didn’t cause any irritation at all.

Around the time I started using this serum, I had a significant hormonal pimple on my chin. Over time, it gradually faded with the help of this serum. I’m truly impressed with its effectiveness.

The serum has two layers, so you need to shake it well before filling the dropper. I love the beautiful, easy-to-use packaging that resembles a flower. To use, simply shake well to activate the two layers.

In the morning, apply 6-8 drops onto your face and neck. Pairing this Vitamin C with sunscreen can enhance the effectiveness of SPF, strengthening the skin’s defense against photoaging and sun damage.

About Wildfleur XC15 15% Pure Vitamin C + Xanthophyll - Marigold Brightening Serum:

The new standard for vitamin C. 15% stabilized L-ascorbic acid (pure vitamin C) featuring a patented technology using marigolds.

Stability Matters: L-ascorbic acid (or pure vitamin C) is the most clinically tested, active form of vitamin C, but it’s an unstable ingredient that starts degrading in the presence of air and light, readily oxidizing into DHA (dehydroascorbic acid) and then 2,3-diketogulonic acid, which has no vitamin C activity.

Thus, unless properly stabilized, the expected efficacy of vitamin C is lost.

Because brands are unable to stabilize this active, most vitamin C products use derivatives, which are not clinically proven with long-term testing, or unstabilized versions and low percentages that start oxidizing from the moment the bottle is opened.

We stabilized pure vitamin C using xanthophyll, a class of light-harvesting, highly polar bioactives found in marigolds.
We designed the serum to add a thin squalane-based layer on top of the bottom pure vitamin C layer to provide additional protection to the vitamin C by preventing the penetration of oxygen and light. 10% Squalane also provides barrier protection to help the skin experience the effectiveness of the active without discomfort.

Shake to activate.
In addition to our patented technology, the bilayer composition of the serum provides secondary protection to the pure vitamin C - The top layer creates a thin, protective barrier by blocking sunlight and oxygen from penetrating the bottom layer.

Pure vitamin C has a natural scent that is slightly sour - Since XC15 is formulated with 15% stabilized pure vitamin C and does not have any added artificial fragrances (to avoid common allergens), you are likely to smell its natural scent within the formula but consider it as a certificate of authenticity that disappears quickly as the product is absorbed.

Clinically proven.
We do extensive testing at each step of the product development process as well as on the final product, including dermatologist testing, instrumentation studies and in-house consumer perception trials, which are:
- Representative, balanced across ages, skin types, skin concerns and level of concern.
- Statistically significant, with carefully designed sample sizes to maximize the validity of the outcomes.
- Randomized, blind & competitor-controlled, to mitigate any bias.

Formulated without-
- Artificial fragrances
- Artificial colors
- Parabens Siloxanes
- Phthalates
- BHA + BHT
- Sulfates (including
- SLS + SLES)
- Triclosan + Triclocarban DEA-related ingredients
- Formaldehyde-releasing ingredients

Cruelty free, Fragrance free, Dye free, Paraben free, Sulfate Free and, Dermatologist tested

I absolutely love this stuff. It works as they say. I started seeing improvements after two weeks of non consecutive use, so it works. I love that it goes on easily and works under other products easily as well. I have seen improvements overall in my skin. I love it so much that I have told everyone I know about it and am getting one for a friend as a birthday gift. I was also bitten by a dog in the face about two years ago and had been working hard on the scarring. The other things I did greatly improved the scarring, and this really took it over the line. You can’t tell that I had four bite marks on my face anymore. I feel so grateful to have this product that works, and is affordable. Thanks for thinking about everyone, and not just those that can afford $200 on one skincare product. 🧡❤️

I was thrilled to find out I was one of the winners of WildFleur’s XC15 Giveaway! My prize? The brand-new Pure Vitamin C 15% Marigold Brightening Serum—and I couldn’t be more excited.
WildFleur is a clean beauty brand on the rise, redefining the power of flowers in skincare. Even better? Every product in their lineup is priced under $27, making it a budget-friendly option that doesn’t sacrifice quality. I really appreciate their commitment to creating vegan, cruelty-free formulas that are dermatologist-tested, clinically proven, and free from artificial fragrances, dyes, parabens, and sulfates. Their pH-balanced formulas make them safe and effective for all skin types.
I had previously tested one of WildFleur’s face washes and was impressed. As someone dealing with stubborn dark spots and sun damage (thanks to my tanning bed days—yikes), I was already curious about their Vitamin C serum.
Let’s be real: not all Vitamin C serums are created equal. Many on the market today either fall short or completely fail, often due to unstable formulations or poor packaging that allows oxygen exposure—causing the Vitamin C to lose its potency.
WildFleur took a different approach. They stabilized their own L-ascorbic acid (pure Vitamin C) using their patented technology called Xanthophyll. It’s clinically tested and targets eight different signs of aging, including hyperpigmentation, loss of firmness, and fine lines. Yes, please!
The Marigold Brightening Serum comes in a colorful yet elegant bottle, complete with a flower-shaped dropper—such a cute touch. It’s nearly scentless to me, and while it initially felt like it might be sticky, it quickly absorbed into my skin and left no residue. Lightweight and fast-absorbing? Win.
While I haven’t seen a dramatic difference in my dark spots yet, I do feel like my skin looks noticeably brighter. I’m really enjoying this serum and would recommend it to anyone looking to boost glow and fight signs of aging. I’m excited to keep using it and see how it performs over time!
WildFleur just launched exclusively at Ulta and Ulta.com on February 2nd, 2025—or you can shop their full range at www.wildfleur.com. I can’t wait to see what they come up with next!