How to Choose Packaging Suppliers for a Cosmetic Brand in Thailand

Decide who sources the packaging: you or the factory

Before contacting any packaging supplier, settle one structural question: will your manufacturer source the packaging, or will you buy it yourself and deliver it to the filling line? Both models are common among Thai OEM/ODM factories, and each shifts responsibility differently.

**Factory-sourced packaging** means the manufacturer selects or buys components from suppliers it already works with. Advantages: components are usually pre-tested on their filling machines, one party is accountable for fit and leakage, and coordination is simpler. Trade-offs: less choice, and you may pay a handling margin.

**Brand-sourced packaging** means you choose and buy components directly. Advantages: more design freedom, direct relationships and potentially better control over cost and branding. Trade-offs: you carry the risk if a bottle does not fit the filling nozzle, a cap does not seal or a pump reacts with the formula.

A hybrid is also common: the factory supplies standard primary packaging, while you source printed boxes and labels. Whatever model you choose, write it into the manufacturing agreement, including who approves samples, who checks incoming components and who pays if a component fails. Ambiguity here is one of the most frequent causes of delays and disputes between brands and factories.

Write a packaging specification before you request quotes

Suppliers can only quote accurately if you tell them exactly what you need. A packaging specification for each component should include:

• **Component type**: bottle, jar, tube, airless pump, dropper, compact, sachet, carton
• **Material**: PET, PP, PE, glass, aluminium, or recycled content, plus any material restrictions
• **Capacity and dimensions**, including neck finish for bottles so caps and pumps match
• **Closure and dispensing**: cap type, pump output per stroke, dropper length
• **Decoration**: colour, printing method (silk screen, hot stamping, labels), number of print colours, finish
• **Compatibility requirements**: formula type, pH, oil content, active ingredients or fragrance that could affect the material
• **Target markets**, because labeling space, recycling marks and material rules vary
• **Expected annual volume** and the first order quantity

Attach the formula type and, where possible, a sample of the product, because compatibility is the single biggest technical risk. A gel serum in a PET bottle behaves differently from an oil-rich balm in the same bottle. When the specification is shared consistently with all candidates, you can compare quotes like for like rather than guessing why prices differ. It also becomes the reference document for incoming inspection later.

Verification checklist for packaging suppliers

Packaging suppliers range from manufacturers with injection moulding and printing lines to trading companies that resell imported stock. Both can be fine, but you need to know which you are dealing with. A practical supplier verification checklist:

• **Company registration** and whether they manufacture, decorate, or trade
• **Quality system**: certifications relevant to packaging manufacturing, and whether they are current; ask for copies rather than accepting a logo on a website
• **Material documentation**: material declarations, food-contact or cosmetic-grade statements where relevant, and test reports
• **Sample policy**: whether they provide stock samples and decorated pre-production samples
• **Capacity and lead time logic**: how they schedule moulding, printing and assembly; timing should be confirmed in the quotation, not assumed
• **Defect handling**: acceptable quality levels, inspection reports and what happens with a rejected batch
• **References**: other cosmetic customers or factories they supply, even if names are anonymised

**Red flags** include refusing to share material information, inconsistent answers about whether they own production equipment, no written specifications on quotes, and pressure to pay in full before samples are approved. Directories and B2B platforms, such as a Thai manufacturers directory, can help build a long list; your own verification should still decide the short list.

Test samples properly: compatibility, fit and function

Never approve packaging from a photo or an empty sample. Components must be tested with your actual formula and on the actual filling equipment. A sound sample programme covers:

• **Compatibility testing**: filled samples stored under different conditions (for example warm, cool, and room temperature) and checked for leakage, swelling, discolouration, odour change or formula separation
• **Fit testing**: cap torque and sealing, pump and bottle thread match, dip tube length, tube crimping
• **Function testing**: pump priming and output consistency, dropper performance, airless evacuation, how much product remains unusable at the end
• **Decoration durability**: print and label resistance to rubbing, alcohol, oils and water
• **Transit simulation**: whether components survive packing and shipping without cracking or loosening

Ask your manufacturer which of these tests they run as part of product development and which you need to arrange separately. Stability testing of the formula is often done in the intended packaging precisely for this reason. Document approved samples with photos, measurements and codes, and keep a signed golden sample with both the packaging supplier and the factory. When a later batch looks different, the golden sample settles the question quickly.

Understand costs, order quantities and lead times

Packaging costs are driven by more than unit price. When comparing quotes, break them down into:

• **Tooling or mould costs** for custom shapes, and who owns the tooling afterwards
• **Decoration set-up costs** such as screens, plates and stamping dies
• **Unit cost** at different quantities
• **Packing and delivery** to the filling factory
• **Testing and certification** if requested

Order quantities often do not align between packaging and production. For contract manufacturing the standard minimum is 1,000 units per SKU, but a packaging supplier may set different minimums for custom colours, printing or moulds. Stock components with simple decoration usually offer more flexibility than fully custom ones. Map these quantities together so you do not end up with surplus bottles for one SKU and a shortage for another.

Lead times depend on stock availability, decoration complexity and the supplier's schedule, so confirm them in writing at the quotation stage. Build the packaging timeline into your overall launch plan: the filling factory cannot start until approved components arrive and pass incoming inspection. Many delays blamed on factories are really late packaging deliveries.

Coordinate packaging with your factory and plan for export

The best packaging decisions are made jointly with the manufacturer, because they fill, cap, label and pack the product. Practical steps:

• **Share the packaging specification with the factory early** and ask them to confirm machine compatibility before you order
• **Agree incoming inspection criteria**: what the factory checks on arrival, sampling level and how rejects are handled
• **Plan labeling space** for every market, including ingredient lists, warnings and importer details; requirements differ by destination, so check with the authority or customs agent in each market
• **Consider shipping**: carton strength, pallet patterns and protection for glass or pumps
• **Keep a component register** listing every part, supplier, specification version and approved sample code

Some brands prefer a product development partner who coordinates formula, packaging and factory in one workflow, such as 5FINE working with a partner factory network, while others manage packaging suppliers directly. Platforms where you can request quotes from Thai factories and packaging firms side by side can speed up the comparison. Whichever route you choose, the checklist above applies: specify clearly, verify independently, test with the real formula and document every approval.