Sometimes, the store brand is exactly the same stuff from the same factory. They literally stop production from a famous brand, change packaging to a store brand and resume producing the same stuff in a different package. The price difference is mostly marketing and that can be a huge part of the budget.

For some other store brands, they do use cheaper ingredients. However, after the inflation we had, many fancy brands also started doing this to keep profits up so a famous brand is no guarantee for a great product.

And some brands just sell the same stuff but add some additional perfumes and whatnot to justify the cost. They give me a rash so I’d rather get the cheap ones.