HDPE vs PET Bottles: Which Plastic Should You Choose?
HDPE and PET are the two plastics you'll meet most often when buying bottles. They look and behave differently, and picking the wrong one can mean a cloudy product, a leak, or a bottle that reacts with its contents.
At a glance
| HDPE | PET | |
|---|---|---|
| Appearance | Opaque, matte | Clear, glossy |
| Clarity | Low | High |
| Chemical resistance | High | Moderate |
| Typical uses | Cleaners, chemicals, cosmetics, food | Drinks, oils, supplements, cosmetics |
| Recycling code | 2 | 1 |
When to choose HDPE
HDPE (high-density polyethylene) is tough and chemically resistant. Choose it for cleaning products, industrial chemicals, and thicker cosmetics, or whenever you want an opaque bottle that hides the contents and helps block light. It handles solvents and a wide pH range better than PET, which makes it the safer default for anything reactive.
When to choose PET
PET (polyethylene terephthalate) is prized for clarity and gloss. Choose it when the product should be visible — juices, oils, serums, supplements — and where a lighter, rigid, glass-like bottle helps sales. PET is not the best match for aggressive solvents or some essential oils, so check compatibility first.
Two quick checks
- Product compatibility — confirm your contents suit the plastic, especially solvents, essential oils, or a high/low pH. Reactive products generally point to HDPE. When in doubt, ask us.
- Recyclability — both are widely recycled across the EU. PET (code 1) and HDPE (code 2) each have well-established recycling streams, so either supports a recyclable pack.
Still weighing it up? For the full decision — volume, neck size and cap included — read How to choose the right plastic bottle.
Ready to order? Browse our bottles or contact us with your product and volume, and we'll recommend the right material.