Dior Skinflash Radiance Booster Pen, €27.50 from counters countrywide. Dior just keep hitting the product jackpot. Their new Skinflash Radiance Booster is perfect for concealing fatigue and brightening the skin. Available in three shades - pale, or with pinky or apricot tones - it can be worn under or over foundation (depending on how much illuminating you want). And the consistency is light enough to work without foundation for quick holiday fix-its.