**Meilleurs Sérums à la Vitamine C pour 2025 : Nos Coups de Cœur Éclatants à Adorer**  

(Alternative option for a slightly different tone: **Top des Sérums à la Vitamine C en 2025 : Vos Favoris Éclatants à Ne Pas Manquer**)  

*Notes on translation choices:*  
- "Brightening" is translated as "Éclatants" to convey radiance and glow.  
- "You'll adore" is adapted as "à adorer" or "à ne pas manquer" to sound natural in French beauty marketing.  
- The structure keeps the engaging, listicle-style tone of the original.  

Let me know if you'd prefer a more formal or playful adaptation!