Squeeze Tubes: Flexible tubes made of PP (or laminated with PP layers) are very common for sunscreens.
Bottles with Pumps: Rigid PP bottles paired with a pump dispenser for easy, one-handed application.
Bottles with Flip-Top Caps: Common for larger family-size bottles of sunscreen lotion.
| Feature | PP (Polypropylene) | PET (Polyethylene Terephthalate) | HDPE (High-Density Polyethylene) |
|---|---|---|---|
| Clarity | Translucent to Opaque | Crystal Clear | Opaque (milky) |
| Barrier | Good Moisture Barrier | Excellent Gas & Odor Barrier | Good Moisture Barrier |
| Rigidity | Semi-Rigid | Rigid | Semi-Rigid, Softer Feel |
| Common Use | Lotion Pumps, Tubs | Water/Soda Bottles, Spray Bottles | Milk Jugs, Opaque Bot |



