How can I create a 'Shop by Brand' collection page on my website?

[AndyyP]

https://beauty-doctrine.myshopify.com/

So I have my collections currently as the individual items (ie hair care, skin care, etc) but my client wants me to create a separate collections page to "Shop by Brand".. 

Is there any way to do this? So under the Shop collection, it'd give me the option to shop by brand and show all of the brands on the site as the same type of style?