What Should Importers Check in a cat eye gel with magnet Supplier?

A supplier should provide samples from more than one production batch, not only a development sample. Compare the same shade under identical application thickness, magnet distance, exposure time, and curing conditions. Importers should record the line sharpness, reflective intensity, movement speed, settling behavior, and final appearance after curing. A retained reference sample, batch code, approved color standard, and documented acceptance limits make later claims more objective. Magnetic pigment alignment is affected by particle characteristics, viscosity, and the working distance of the magnet, so visual color alone is not a sufficient release criterion.

Importers should request a written curing recommendation linked to the intended lamp type, wavelength range, power condition, layer thickness, and exposure time. The supplier should explain how the formula was assessed for surface cure and incomplete cure, rather than relying only on a color swatch. Testing should use the actual bottle formula and the lamp models likely to be used by customers. A gel can appear dry while remaining insufficiently cured underneath, particularly when applied too thickly or used with an unsuitable lamp. The importer should also check required warning language and professional-use instructions for the destination market.

There is no universal magnet specification that produces the same effect across every formula. Bar, round, double-ended, and multi-face magnets create different field patterns, while distance and movement angle change the pigment path. Suppliers should define the recommended magnet geometry, approximate working distance, positioning method, and hold time through a repeatable sample procedure. Buyers should test several units from the proposed supply lot because manufacturing variation can affect results. The relevant criterion is not the strongest magnet, but consistent alignment with the formula and an application method that salons or consumers can reproduce.

Request stability samples stored under defined conditions and inspect them at agreed intervals for sedimentation, separation, clumping, viscosity change, and magnetic response. The evaluation should include normal storage, transport simulation where appropriate, and repeated remixing or shaking according to the intended instructions. Settling is not automatically a defect: dense effect pigments may move downward during storage, but they should redisperse within the specified preparation process without persistent lumps or a changed shade. Importers should compare top, middle, and bottom portions after controlled mixing and document the result before approving a bulk formula.

The required file set depends on the destination jurisdiction and product classification, but importers commonly review a complete ingredient declaration, safety data sheet where required, batch or lot identification, product specifications, usage warnings, and packaging artwork. Market-specific cosmetic rules may also require a responsible entity, notification, language requirements, claims controls, or animal-testing statements. Buyers should have a qualified regulatory reviewer confirm the destination requirements instead of treating one country’s paperwork as globally transferable. The supplier should identify formula changes through revision control so the approved documentation remains connected to the shipped batch.

Packaging evaluation should cover cap sealing, leakage, bottle compatibility, label adhesion, light exposure, temperature variation, vibration, and impact appropriate to the distribution route. Importers should inspect whether the brush, wiper, cap, and bottle remain functional after transport simulation, and whether the gel’s viscosity or appearance changes after storage. Dark or light-protective packaging may be relevant when the formula is sensitive to light, but the correct choice should be established through product testing rather than assumed from appearance. Approve production packaging only after confirming fill volume, closure torque, carton arrangement, and the final shipping environment.