Here are some great resources to check out:

https://neilpatel.com/blog/write-better-product-descriptions/
https://unamo.com/blog/seo/comprehensive-guide-writing-seo-friendly-product-description
https://www.shopify.com/enterprise/seo-product-descriptions
https://www.searchenginejournal.com/product-page-seo/195415/

The single best tip I can give is to identify the common questions and keywords around that specific product you're selling.

After you know that, pick the most relevant ones and include them in your product description.

Additional tip: Keep UX in mind always.

Thought you might like to join this discussion @Luat Duong @Amanda O'Brien @Jeff Carpenter @Chirene Hughes