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Blacklight Blonde Science was born in a professional hair care lab, not a marketing meeting. In 1986, a team of chemists began formulating science-backed hair care exclusively for professional stylists — research that became the foundation of Oligo Professionnel, a name trusted in salons for over three decades. What was once available only behind the chair is now bottled for you: the same clinically-informed formulas, engineered specifically for blonde and lightened hair.