URLS;
Things to look out for:
- Brand Buyers guide titles should be:
-- hhbeauty.com/brandname-keyword-review eg. hhbeauty.com/Fahrenheit-flat-iron-review

- Product Buyers guide titles should be:
-- hhbeauty.com/best-keyword-review eg. hhbeauty.com/best-hair-straightener-review

- Product reviews should then be a sub URL of the main review;
-- hhbeauty.com/best-keyword-review/product-name or
-- hhbeauty.com/brandname-keyword-review/product-name

Things to avoid: using the same keyword multiple times in any given url;
- How not to do it; hhbeauty.com/fahrenheit-flat-iron-review/fahrenheit-sleek-pro
- How to do it; hhbeauty.com/fahrenheit-flat-iron-review/sleek-pro

TITLES;
This is the META title which you can edit on yoast (the section at the bottom of the page builder)
Titles serve the purpose to tell google what you want to show up for. Its probs the most indicative part of the page other than the url for keywords.

How to make a good title;
Best Eyelash and Eyebrow Serums Reviewed - Harmony Health & Beauty
This covers all of these variants:
Best Eyelash serum
Best eyelash serum reviewed
Best Eyebrow serum
Best eyebrow serum reviewed
And many more, it also has all of our target keywords included in one simple title.

How NOT to make a good title;
Amana Air Conditioner | Amana AC Units | Amana Air Conditioning
PS: yes i just took that of off a website thats trying to rank. :D