Try the Ulta Beauty Categories API

- `group` is empty for two kinds of entries: a department's own top-level link (e.g. "All Makeup & Nails"), and a group's own heading link (e.g. "Face"), which is itself a real, browsable category one level above its own leaf items. Every leaf item nested under a group carries that group's name as `group` (e.g. "Foundation" carries group `"Face"`). - `department`/`group` reflect the site's own navigation grouping, not a slug derived from the returned URL's path. Some categories are cross-listed by Ulta's own navigation under more than one department -- for example "Tinted Moisturizer" and "Makeup Remover" appear under the Makeup & Nails department's "Face" group, but their URLs resolve under `shop/skin-care/...`, and the same two categories also appear separately under the Skin Care department's own "Moisturizers"/"Cleansers" groups. This is expected: the same real category can legitimately appear more than once with a different `department`/`group` pairing. - A small number of groups have a heading link but no nested leaf items at all (for example Men's Care's "Cologne") and surface as a single group-empty entry, the same shape as a department's own top-level link.