Does TPU Yellow?

Why cheap jelly bags yellow — and why ours resist it.

The honest answer

Cheap jelly bags made from low-grade PVC are notorious for yellowing and turning sticky over time, because of plasticisers migrating out of the material and reacting to UV light.

Sencieres bags use premium TPU specifically because it resists yellowing far better and doesn't rely on those migrating plasticisers. It's more UV-stable and holds its clarity much longer.

Keep clear colours crystal

• Store out of direct, prolonged sunlight.
• Keep it away from constant high heat.
• Wipe off sunscreen, oils and dark dye transfer promptly.
• Let it breathe — don't seal it airtight for months.

Learn more: TPU vs PVC.

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