Google ranks product pages on the words it can read. A product with 30 words has little to match against the long, specific searches that convert, such as a material, a size, a use or a style. Duplicate copy makes it worse: when ten products share one description, Google picks one to show and the other nine rarely appear. AI shopping answers work the same way, quoting the specific details a page gives them.
Five fixes, in order
1. Write the best sellers first. Take the 20 products that already earn the most impressions in Search Console and give each one a description that answers the buyer: what it is, who it suits, fit or size, materials, care, delivery. 2. Merge or rewrite colourways. One product with colour variants, or one unique opening paragraph per colour. 3. Add images where there is only one. Scale, detail and in-use shots. 4. Fill product type and tags. Collections, filters and on-site search depend on them. 5. Check the rendered page, not just the editor. Some themes pull extra text from tabs and metafields, which is fine as long as it is unique to the product.
We do this work for Australian stores on our Shopify SEO and ecommerce SEO engagements, and the two stores we can show numbers for are on the results page.