Philips Support

Why do Avent baby bottles and pump parts discolor?

Published on 12 September 2023
Discoloration is when Avent baby bottles and breast pump parts change color, usually too yellow, orange, or pink. This can happen because of food colorings that dissolve into plastic material. These colorings can mix with fats and get absorbed into the plastic, causing discoloration.
Other things that can cause discoloration include residues from previous washes, cleaning agents, calcium buildup from hard water, and direct sunlight.
Always wash baby bottles and breast pump parts thoroughly with a mild detergent after every use. You can wash them in the dishwasher or by hand. However, we recommend washing them by hand in a clean bowl using a clean brush to avoid contact with food colorings. After washing, disinfect the parts by boiling them in water, which can help delay discoloration and prevent cloudiness and yellowing in plastics.
Yes, it's safe to use them. The discoloration should not affect the performance or safety of the Avent baby bottles and breast pump parts.
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