| 1 | Tube Material and Barrier Protection | Select aluminum, plastic, or multilayer laminate tubes according to formula compatibility. For oxidation-sensitive formulas, specify a high-barrier structure and an internal protective coating. | Hair color creams may contain dyes, alkalizing agents, oils, and oxidizing ingredients that can interact with packaging materials or reduce product stability. | Material declaration, coating information, compatibility test results, barrier-performance data, and samples filled with the actual formula. | Critical |
| 2 | Fill Volume and Tube Dimensions | Define the nominal fill volume, tube diameter, total length, shoulder shape, and usable product capacity. Common retail sizes include approximately 50–150 mL, depending on the product format. | Correct dimensions improve dosing accuracy, shelf presentation, carton fit, and compatibility with filling and sealing equipment. | Dimensional drawings, tolerance ranges, capacity tests, fill-weight verification, and a production sample approved against a signed specification. | High |
| 3 | Closure, Nozzle, and Seal Design | Choose a flip-top, screw, or other suitable closure. Specify nozzle opening, cap fit, tamper evidence, induction or foil seal requirements, and leak-resistance criteria. | The closure controls dispensing, helps prevent leakage and contamination, and influences consumer perception of quality and safety. | Torque or fit specifications, leak and pressure test results, seal-integrity records, closure compatibility samples, and transit-test performance. | High |
| 4 | Printing and Decoration Requirements | Define the print process, number of colors, artwork dimensions, finish, text legibility, barcode area, batch-code zone, and required abrasion resistance. | Hair color packaging often requires detailed shade names, usage instructions, warnings, ingredients, and regulatory information in a limited print area. | Color proof, print-registration tolerance, rub-resistance test, barcode verification, ink compliance documentation, and approved pre-production samples. | High |
| 5 | Formula Compatibility and Product Safety | Require compatibility screening with the finished hair color formula, including storage at normal and elevated temperatures, visual inspection, odor evaluation, leakage checks, and weight or viscosity monitoring. | Packaging can affect formula appearance, odor, stability, and dispensing performance over the intended shelf life. | Written test protocol, stability-study summary, migration or extractables information where applicable, product-safety documents, and corrective-action records. | Critical |
| 6 | Quality Control and Manufacturing Consistency | Set measurable limits for dimensions, wall thickness, color, print position, closure fit, seal quality, cleanliness, and cosmetic defects. Use statistically defined inspection levels where appropriate. | Consistent production reduces filling-line interruptions, customer complaints, rejected shipments, and variation between batches. | Quality manual, inspection checklist, certificate of analysis or conformity, batch traceability, defect classification, and sample inspection reports. | High |
| 7 | Sustainability, Compliance, and Supply Capability | Define recycled-content targets, recyclability requirements, applicable packaging regulations, minimum order quantity, lead time, annual capacity, and contingency planning. | A suitable supplier must support legal compliance, environmental objectives, reliable replenishment, and scalable production without compromising specifications. | Material compliance statement, recycled-content evidence, packaging sustainability data, capacity plan, lead-time commitment, business-continuity plan, and audit access. | Medium–High |