For a premium UK oral care brand, we developed an eco-friendly sonic toothbrush designed around biodegradable materials, minimalist aesthetics, IPX7 waterproofing, and plastic-free packaging. The project helped the brand move from concept validation to large-scale production while meeting strict European sustainability and quality expectations.
The client wanted to launch a sustainable sonic toothbrush with a biodegradable PLA body and a premium aluminum-plastic structure. However, PLA is difficult to control under high-frequency sonic vibration, and weak molding stability can lead to cracking, loose brush heads, or poor long-term durability. The project also required reliable IPX7 waterproof sealing and protective packaging without plastic foam.
We optimized PLA injection molding parameters to improve dimensional stability and reduce shrinkage risk. For the aluminum-plastic junction, we developed a dual-seam waterproof structure to protect the internal transmission and electronic components during daily wet-use conditions. We also created molded pulp cushioning to replace plastic packaging while maintaining strong drop-test protection and a premium unboxing experience.
The project scaled to more than 1,000,000 units shipped. Production achieved a 99.95% first-pass yield rate, 100% on-time delivery, and 100% compliance in customs environmental inspections. The finished product helped the client strengthen its position as a leading green personal care brand in the European market.
We help sustainable oral care brands turn eco-friendly product ideas into reliable mass-produced devices, covering material validation, waterproof engineering, packaging development, quality control, and stable OEM/ODM delivery.