Sonia Constant is a French master perfumer and co-founder of Ella K Parfums, known for her modern, sensual fragrance creations. After training at ISIPCA and the Givaudan perfumery school, she built an impressive career at Givaudan, where she worked for over twenty-four years on fragrances for international houses such as Tom Ford, Narciso Rodriguez, Mugler, Jean Paul Gaultier, and Jimmy Choo. Her style is characterized by a strong emotional charge, modern elegance, and a subtle interplay between softness and intensity.

Travel is a significant source of inspiration in her creative process. Sonia Constant captures impressions, colors, and atmospheres in her notebooks and later translates these into scent compositions full of character and imagination. In 2017, she launched her own brand, Ella K, further expressing her personal vision of freedom, discovery, and beauty.