Summary:
- Toothpaste contains an ingredient called sodium lauryl sulfate (SLS) that can temporarily alter the way we taste certain foods, like orange juice.
- SLS disrupts our ability to taste sweet and bitter flavors, making orange juice taste unpleasant and metallic after brushing our teeth.
- This effect is temporary and usually goes away within 30 minutes to an hour, as the SLS is washed away and our taste buds return to normal.