Hi ATruong,
Welcome to SaleHoo!
To use and search in the directory please click on the Directory link you will see on the topmost part of the SaleHoo page. You will be led to a page with a Search box where you can type the product/keyword that you need suppliers for. (for example "cosmetics")
You can actually filter the suppliers search by order requirements (no minimum order to brackets of price order required) , by category and sub category, by location (drop down list of countries) and by type (dropshippers, wholesalers, manufacturers, liquidators). You can also choose to filter those who can ship internationally and/or does not requiring a Tax ID. :) To see these options, just below the green box for Search, you can click on 'More Options'. Set the filters you need and click on Search. :)
Here are our top wholesale suppliers for brand name cosmetics -
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Let us know how you get on and if you need further help.