Shapleys Hi Shine Shampoo. The Shapleys Hi Shine Shampoo is designed to gently deep clean your horses hair. The Shapleys Hi Shine Shampoo produces a rich, foamy lather that rinses out easily without leaving any residue. Hi Shine will leave the coat, mane and tail squeaky clean, shiny and manageable. It is gentle enough to be used every day. Hi Shine is specially formulated to cut through oil and will easily and effectively. Hi Shine can be applied directly to wet coat or diluted in a bucket of water and applied with a sponge.