L'Oréal Professionnel is the professional arm of L'Oréal Group — the world's largest beauty company — and one of the most iconic professional haircare brands in history. Founded in France in 1909, L'Oréal Professionnel has been at the forefront of professional colour and haircare innovation for over a century, developing many of the technologies that the entire industry relies on today.

The brand's professional product portfolio spans colour systems (Majirel, INOA, Dia Light), care collections (Serie Expert, Metal Detox), and treatment services. The Serie Expert line covers virtually every hair concern from moisture and repair to curl care and scalp health — each with its dual-action Pro-Keratin + Incell technology.

At ProHair.ca, L'Oréal Professionnel Serie Expert represents one of the most accessible yet genuinely professional care ranges we carry. It's a brand trusted by thousands of Canadian salons and delivers consistent, reliable results for every hair type.