Hygienesystem.it boosts E-commerce revenue by 33%

If you run an E-commerce store and want to use predictive AI to grow revenue, this case study of Hygiene System with Clerk.io is for you. By applying smart strategies, they didn’t just increase sales, they also improved the customer experience, boosted average basket size, and reduced bounce rates.
What is predictive AI and why it matters for e-commerce
Unlike generative AI, which creates content, predictive AI anticipates what customers are likely to do next, what they want, what they might search for, or what products they may reorder. In today’s competitive e-commerce market, predictive AI is a foundation for growth, helping businesses increase sales and deliver a better customer experience.
Clerk.io’s personalization tools for search, recommendations, email, and audience targeting are all powered by predictive models that create personalized shopping experiences. These tools reduce friction, guide users to the right products faster, and increase conversions, average order value (AOV), and overall revenue.
For example, Clerk.io Search helps online stores capture intent instantly and reduce bounce rates, while Clerk.io Recommendations boost AOV with personalized suggestions throughout the customer journey.
Hygiene System case study: key results
Hygiene System, an Italian cleaning-products store, adopted Clerk.io’s predictive AI and achieved:
- +33% overall revenue growth
- +21% increase in average order value (AOV)
They reached these results by improving multiple parts of the customer journey: search, recommendations, the shopping cart, browsing, and returning customer flows.

Intelligent search that understands customers
Like many stores, Hygiene System faced issues with broad searches, spelling mistakes (especially on mobile), and customers getting lost in large categories. With Clerk.io, they were able to:
- Immediately understand customers’ typos & misspellings and show the right products
- Deliver relevant products even from vague searches
- Use dashboards to track search errors and set redirects
"One of the most valuable features has been the search analytics dashboard, which allowed to identify the types of products users were most engaged with and optimize the catalog accordingly" - Mary Mazzon, E-commerce marketing specialist at Hygienesystem

Personalized recommendations to increase basket size
To boost AOV and increase sales, Hygiene System added personalized recommendations in key places:
On category pages: the need for customer support has decreased because users can now find products more easily, whether they're browsing by category or searching for a specific item. This experience helps them get to the product page quickly and with confidence.

Inside the shopping cart: with this specific popup and the integration with Clerk.io, it can also set merchandising rules, deciding which complementary items to recommend depending on the products added to cart. The result is bigger baskets and Average Order Values.

On each product page: Hygiene System has AI recommendation banners on every product page, making sure that if a user's intent doesn't match the product page they landed on, there are always better alternative products. This tactic significantly reduces bounce rates.

The company has worked extensively on improving the returning customer flow. On one hand, by predictively identifying products that are likely to be purchased repeatedly; on the other, by nurturing existing customers through a series of on-site activations powered by Clerk, from search to recommendations. These tools have enabled to grow and scale very quickly.

“With Clerk, the need to rely on customer support has been significantly reduced: users can immediately find the product they’re looking for, even when starting from broad categories, and then refine their search to finalize a purchase. We also solved the issue of misspellings, which are common on mobile devices. Clerk helps in two ways: it intercepts the query and shows the correct product instantly, or it allows us, through dashboards, to detect unrecognized errors and set up redirects. Beyond that, search has become a strategic tool: by analyzing user queries, we can identify opportunities to expand the catalog and test new products.”
- Mary Mazzon, E-commerce marketing specialist at Hygienesystem
If you want to maximize your e-commerce performance, predictive AI and strategies like these can deliver real, measurable results.
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