What polymer is a shampoo bottle?

High-Density Polyethylene (HDPE): 

HDPE is widely used for shampoo bottles because it is strong, durable, and resistant to moisture and chemicals. It is also easy to mold and can be recycled.

Polyethylene Terephthalate (PET): 

PET is another common material for shampoo bottles. It is clear, strong, and lightweight, making it suitable for packaging. PET is also recyclable.

Polypropylene (PP): 

PP is used for certain parts of shampoo bottles, such as caps and closures, due to its high resistance to chemicals and elasticity.