Complex sentence: Canada's health/cosmetic regulations differ from that of the US, in that Canada is comparatively more conspicuous in their oversight efforts towards safe cosmetics, making them a focal comparative model relative to the Campaign for Safe Cosmetics success in the United States.
Split into simpler sentences: Canada's health/cosmetic regulations differ from that of the US, in that Canada is comparatively more conspicuous in their oversight efforts towards safe cosmetics. Thus they provide a comparative regulatory model relative to the Campaign for Safe Cosmetics success in the United States.