Rewrite one description this week, in this order
Pick your bestselling product and rewrite its description in four steps. First, write the benefit in one line, in the buyer's words. Second, add the feature that proves it, in one line. Third, answer how it is used, how often, and for whom, in short lines. Fourth, move the full specifications below the buy decision, where comparing buyers can find them. Then check the result on a phone: benefit visible, proof close behind, no wall of specifications before either.
If every product page on your store reads the same feature-only way, the problem is template-level, and a structured rewrite across the catalogue is the right scope. If one page reads that way while others convert, that page's copy is the problem. If you want that diagnosis done for your store, the next step is a Shopify CRO audit or a discovery call, with scope and price agreed before any work starts.