Radiance Anti-Spot Serum - HOLIDERMIE | Evenness & Brightness

How does stabilized Vitamin C truly reduce pigment spots?

Pigment spots result from an overproduction of melanin. Stabilized Vitamin C works by inhibiting tyrosinase, the key enzyme that converts the amino acid tyrosine into melanin. By blocking this initial step, Vitamin C reduces the formation of new pigments at the source. But it also acts on existing spots: it penetrates pigment cells and promotes the degradation and elimination of already present pigment. Clinical result: –36% after 56 days. This 5% concentration is high enough to be effective, yet stable (formulated not to oxidize quickly). This is why the results are measurable — it's not a slight lightening, it's a genuine reduction of spots.

Why combine Vitamin C and Niacinamide for even skin tone?

It's a scientifically powerful duo. Vitamin C acts on melanin production, while Niacinamide slows its transfer from pigment cells (melanocytes) to skin cells on the surface. By combining these two actions, pigment is reduced at the source AND its visibility is limited. Furthermore, Niacinamide strengthens the skin barrier and regulates hydration — meaning the skin becomes not only more even but also more protected and brighter. 100% of users find their complexion brighter after 28 days. This multi-level approach explains the serum's remarkable effectiveness.

How long does it take to see visible results?

The first results come quickly. From the very first days, most users notice a brighter and more even complexion — this effect is partly due to the hydration provided by Polyglutamic Acid and Vitamin E, which smooth the texture. After 2 to 3 weeks, evenness further improves, and spots begin to lighten slightly. The most spectacular results occur after 6 to 8 weeks of regular use: this is when Vitamin C has truly acted on pigments stored in the cells. The clinical study shows –36% of spots after 56 days. For maximum effectiveness, apply twice daily, morning and evening, on perfectly clean skin, before applying your usual moisturizer.

Is Anti-Spot Radiance Serum compatible with other active skincare products?

Yes, absolutely. This serum pairs remarkably well with other products. Its light aqueous texture means it penetrates quickly without creating overload — you can apply it before a moisturizer or targeted treatment. Important: avoid mixing this serum with other high concentrations of acids or retinol on the same day, as this could irritate sensitive skin. If you use an acid peel or retinol (in the evening, for example), apply the Anti-Spot Radiance Serum in the morning. Its pH is slightly acidic (to optimize Vitamin C penetration), but the rest of the product is stabilized to minimize irritation. Most users tolerate it very well, even sensitive skin, thanks to the soothing Niacinamide and Centella Asiatica.