Radiance has always been at the heart of Clarins. Now, the French beauty house enters a new chapter in complexion with the launch of Double Serum Foundation, and to mark the moment, it is taking glow on tour. The Radiance Studio, an immersive pop-up activation, will be touring three major UK cities this February and March. Created in partnership with experiential agency Backlash, the roadshow blends skincare science, personalised consultation and high-impact…