L'Oréal Professionnel Infinium Pure Extra Strong Hair Spray 300ml - New. Give hair an instant, extra strong hold with brilliant shine. L’Oréal Professionnel Infinium Extra Strong provides extreme instant fixing of a section or long-lasting overall hold to hair. It has a patented formula designed to give the ultimate finish to hairstyles, with optimal shine. L’Oréal Professionnel Infinium Extra Strong has an anti-humidity action, so hair keeps its style even in humid conditions. This spray won’t leave residue in your hair and has a neutral perfume.