Ivory soap advertised that it is 99% pure. Ivory refused to add dehydrogenates facial creams and colors

Question:

Ivory soap advertised that it is 99% pure. Ivory refused to add dehydrogenates facial creams and colors to its soap. It also wrapped its soap in plain paper wrappers-no foil or fancy printing. Is ivory implementing product differentiation, low cost, price strategy or some combination of the three? Explain you answer?