Amy Lyu

Last quarter, a Korean skincare brand sent us three different serum formulations and asked which spray pump would work across all three. The answer was none of them. Each formulation had a different viscosity, different active ingredients, and different shelf-life requirements. That single conversation captures why cosmetic spray pump types matter more than most brand […]

Last quarter, a French skincare brand sent us samples of their serum line packaged in standard PET bottles. Within eight weeks of shelf testing, the bottles had developed visible stress crazing along the shoulder. Their formulation contained 12% alcohol and a cocktail of essential oils. The fix was straightforward: switch to PETG. PETG bottles for

Last quarter, a European skincare brand came to us with a problem. They had sourced 50,000 airless pump bottles from a trading company that claimed to be a manufacturer. The bottles looked fine on arrival. Three months into shelf life, the pumps started failing. The trading company had no factory floor to inspect, no engineers