Pool season alert: How chlorine affects your teeth and eyes

Posted on July 1, 2026 in Healthy You

Swimming is a great way to stay active, but frequent dips in chlorinated water can have some unexpected effects on your teeth and eyes. Let’s take a deeper dive into this topic, including ways to protect your teeth, eyes and swimming schedule.

Will chlorine turn your teeth yellow?

Chlorine helps keep pools safe by killing bacteria, but it can also lower the pH of pool water. As the pH gets lower, the water gets more acidic. When you repeatedly swim in water that is too acidic, it can weaken your tooth enamel (the outer coating of your tooth). This is sometimes referred to as “swimmer’s calculus,” a condition where stains or buildup appear on your teeth after frequent exposure to poorly balanced pool water.

Although swimmer’s calculus is more common in competitive or frequent swimmers, even occasional swimmers should be aware. Worn down enamel can lead to tooth sensitivity, yellowish discoloration and a higher risk of cavities. And once you lose your enamel, you can’t grow it back — it’s gone for good.

Can chlorine turn your eyes red?

Many of us have made the mistake of swimming in chlorinated water without goggles. If your eyes feel red or irritated after swimming, chlorine may be part of the reason. Pool chemicals can disrupt the tear film that protects your eyes, leading to dryness and irritation.

Simple ways to protect your smile and eyes in the pool

Keeping your mouth closed in the pool reduces the chemical’s exposure on your teeth. Rinsing your mouth with some water and staying hydrated poolside helps keep your mouth clean and healthy, too. Drinking water helps maintain a good amount of saliva in your mouth, which naturally protects your teeth.

For your eyes, wear well-fitting swim goggles to block chlorine from reaching your eyes. Lubricating eye drops may help if you experience dryness or irritation.

If you can, check the pool's pH levels. A pH lower than 5.5 can erode tooth enamel, while the recommended pH range for swimming pools is 7.2 to 7.8.¹

If you notice tooth sensitivity, staining or eye irritation that keeps coming back, it may be worth discussing with your dentist or eye care specialist. They can discover problems at their earliest stages, when they’re easier and less costly to treat.

Swimming is part of a healthy lifestyle and just plain fun, so use these simple tips to enjoy the pool while protecting your oral and vision health. Be sure to keep up with twice yearly dental checkups and regular comprehensive eye exams, especially if you swim often.

REFERENCES:

1. Dentalcare.com

SOURCE:

International Journal of Innovative Science and Research Technology