Lethal Cosmetics - Build your own palette (BYOP) configurator APP

Lethal Cosmetics reached its limits in WooCommerce. Every customisation to banners, landing pages or BYOP products required developer support, which made spontaneous changes impossible. As custom code, the warehouse management system was closely interlinked with the WooCommerce database and created dangerous dependencies. The migration had to handle complex data structures: Products, customer accounts, order history including bundle configurations, vouchers and extensive metadata. In addition, the warehouses in the USA and Germany needed to be professionally managed with separate catalogues, currencies and prices.

We migrated the entire shop from WooCommerce to Shopify and fully integrated the existing BYOP configurator into Shopify as an app. All data was transferred in a structured way, from products and customers to orders with bundle logic, vouchers and custom meta fields. We replaced the proprietary warehouse system with SKUSavvy, a modern SaaS solution with native Shopify integration. Klaviyo replaced the previous newsletter system and works perfectly with Shopify. We use Shopify Markets for international management, whereby both warehouses are managed centrally with individual catalogues, currencies and prices. Metafield entries were standardised and the backend optimised with intuitive templates.

• Editorial independence achieved. The team can edit banners, landing pages and BYOP products independently without having to wait for developers.
• Professional warehouse management established. SKUSavvy replaces the custom code and works seamlessly with Shopify, without individual technical dependencies.
• International multi-warehouse setup optimised. Shopify Markets manages the USA and Germany centrally with separate catalogues, currencies and country-specific prices.
• Noticeably faster work in the backend. The clearer user interface and shorter loading times allow adjustments to be made in real time at short notice.
• Measurable performance improvement. The front-end pages load 2.1 seconds faster, which has a positive effect on conversion and SEO.
• Marketing automation simplified. Klaviyo integrates perfectly with Shopify and replaces the previous newsletter system.
• Error-free product data guaranteed. Standardised meta field entries ensure consistent information across all products.
• Seamless data migration completed. All customer data, the complete order history and all custom meta information were transferred in full.

This comprehensive migration impressively demonstrates how switching to a modern e-commerce ecosystem can transform the entire operating structure. By consistently replacing custom code with proven SaaS solutions, we have eliminated all technical dependencies. For internationally operating brands with complex requirements, Shopify offers a scalable infrastructure together with specialised tools such as SKUSavvy and Klaviyo. The investment pays off measurably: in workflow speed, data quality, international expansion and, above all, in the independence gained by the entire team.