As the founder of Alaena and a dermatologist for over twenty years, Dr. Sylvie Peres champions a vision: at the crossroads of dermatology and natural science, a living cosmetology that reactivates cellular biological functions. A pioneer in her field, she was one of the first to warn about the toxicity of endocrine disruptors in the 2000s and to ban all synthetic ingredients from her prescriptions. From this demanding approach, a method was born: each Alaena active ingredient is designed to reactivate an identified cellular cycle, with its effectiveness measured on human skin. "The skin has a natural intelligence. Our role is not to correct it, but to reactivate its biological cycles. And to prove it."