The problem I have with this is that although The Body Shop is fond of advertising its anti-vivisection policy and ethical standpoint, it would be well-nigh impossible for it to guarantee that at least some of the ingredients contained in Body Shop products do not originate from dubious sources where such ethical standpoints mean very little.
I think this was confirmed in the small print of the company's website the last time I looked.
As for laboratory jobs in H&B, there are loads. It does depend on your particular expertise, but they employ formulation chemists, quality control chemists, microbiologists, powder technologists, polymer scientists, colour chemists, perfumers, product developers, trichologists, rheologists,packing technologists and pharmacologists amongst others.