Visual mega menu, custom pack builder, FR/EN/ES internationalization, cart cross-sell — a full redesign on Theme FullStack executed by The Deployer.
A dense technical scope
Visual mega menu with product imagery, internationalization across 3 languages (FR/EN/ES), custom pack builder, cart cross-sell with checkbox, 1-click checkout button, personalized announcement bar — a dense functional scope.
Rebuild the pack builder with no functional loss
The pack builder was a key element of Charlotte Bio's commercial model. Rebuilding it on FullStack had to reproduce the existing experience while simplifying internal management.
Full redesign with consolidated templates
The redesign covered product pages, collections, cart, blog, guides and custom pages — with page templates consolidated to simplify long-term management.
Charlotte Bio's existing site could no longer keep up with the brand's growth. Rich visual mega menu, custom pack builder, FR/EN/ES internationalization, cart cross-sell, automatic add-to-cart — every feature required either an app or custom development.
Theme FullStack made it possible to centralize most of these features natively, importing the missing widgets and rebuilding the pack builder with FullStack logic.
Charlotte Bio was rated the safest makeup brand by UFC Que Choisir. That level of credibility demanded a site to match — fast, multilingual, and able to handle complex commercial logic.
The golden rule of a successful migration: don't start from scratch. We first faithfully replicated the existing setup to protect performance, then leveraged FullStack's native capabilities to eliminate friction points.
Standard theme unfit for the brand's commercial complexity
Pack builder on a third-party app
Internationalization through an external app
No native cross-sell in the cart
Unconsolidated page templates (heavy maintenance)
Dev dependency for brand guideline updates
Native visual mega menu with product imagery
Pack builder rebuilt on FullStack
FR/EN/ES internationalization built in
Cart cross-sell with checkbox
Automatic add-to-cart
Consolidated templates (products, collections, guides)
Brand guidelines applied pixel-perfect
Mapping of all components, UX behaviors, and active apps. Identification of friction points and native opportunities.
Faithful reconstruction — same structure, same content, same information architecture — on the FullStack foundation.
The cart managed by a third-party app is replaced by a native FullStack component. Reduced JS conflicts and immediate performance gains.
Imported the internationalization widget (FR/EN/ES), imported automatic add-to-cart, rebuilt the pack builder, cart cross-sell with checkbox, custom header button, personalized announcement bar.
Consolidated product page templates, consolidated collection templates, consolidated guide pages — to reduce maintenance load and make future store evolutions easier.
The FullStack Theme is not a generic theme. It is 6 years of expertise condensed into a single codebase — 100% proprietary and built for performance.
Every feature is built natively into the theme. No conflicting third-party apps, no asynchronous loading, no hidden technical debt.
FullStack is 100% proprietary code — not a third-party base, not a fork. It is the culmination of 6 years of cross-functional expertise: Shopify development, CRO, UX design, A/B testing, analytics, marketing, and human psychology.
Migration empowers teams to iterate independently without external dependencies. Every FullStack update automatically enhances your store.
“CharlotteBio had very specific needs — pack builder, visual mega menu, internationalization, cart cross-sell. FullStack absorbed the complexity without compromising performance.”
Thomas Giraud — Founder, Theme FullStack & The Deployer
Rated 4.9/5 out of 200+ reviews
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