The phrase "different formulas" refers to a variety or range of different methods, techniques, approaches, or calculations that are used for achieving similar results. Full definition
We use different formulas for our different dogs, according to their individual needs. (proplan.com)
Car insurance companies use different formulas when calculating rates, so no policy is priced the same by any two insurers. (carinsurance.com)
I'm extra picky, but I love to have a bunch of different formulas in my makeup stash at any time so I can change my lash look depending on my mood. (makeup.com)