Luxury department-store creams are still mass-market products, which means they also tend to use low concentrations of active ingredients for liability reasons. The difference is that, instead of keeping the cost down, more of the money goes into the “experience” of the product — the luxurious packaging, the texture, the fragrance, and the prestige of the brand name. They can feel wonderful to use, but they oftentimes aren’t a ton more effective than lower-priced mass-market products.
Where price is more likely to reflect performance is in "medical-grade" skincare, which is typically available through medical practices, under a medical provider's supervision. These products are usually on the higher end price-wise because they’re formulated with higher concentrations of proven actives in advanced, stable delivery systems — strong enough to create visible, measurable changes in the skin. And yes, that also means there’s a higher chance of irritation if they’re used incorrectly. But because they’re dispensed under medical supervision, there’s less concern about liability and more focus on achieving results. In other words, medical-grade products are able to prioritize efficacy over mass-market safety — and that’s where you tend to see the biggest results. Plus, when you purchase through a medical office, there’s always someone on staff you can directly reach out to if you’re having issues with a product — something you’d never get when grabbing a cream off a drugstore shelf.