If you’ve recently noticed your Listerine turning brown in color, you’re not alone – and it’s definitely not the first time it’s happened. In fact, this phenomenon has occurred throughout the past 100 years of Listerine history. As far back as the 1930s, people started complaining about their Listerine turning brown when exposed to natural light from windows or even fluorescent lights inside buildings and stores.

Some fun facts about the history of Listerine

– Listerine was first introduced in 1879 by Dr. Joseph Lawrence and Jordan Wheatcroft as a surgical antiseptic

– It wasn’t until 1895 that Listerine was marketed as a mouthwash

– In the early 1900s, Listerine ads claimed the product could cure colds, sore throats, and even dandruff

– In 2006, Listerine was acquired by Johnson & Johnson

– Brown Listerine is actually just old Listerine that has changed color due to oxidation

– Don’t worry though, brown Listerine is still safe to use

– So if you see your bottle of Listerine turning brown, don’t toss it out just yet!

Why it changed colors

Listerine recently changed the color of their mouthwash from clear to brown. The decision was made in order to give the product a more natural look. Some customers are unhappy with the change, but brown listerine is still safe to use.

If you’re one of the many people who are wondering why Listerine changed colors, you’re not alone. Recently, the popular mouthwash brand made the switch from clear to brown. The decision was made in order to give the product a more natural look. Some customers are unhappy with the change, but brown listerine is still safe to use.

There’s no need to worry about using brown listerine – it’s just as effective as the clear version.

How it affects you

If you’ve been using Listerine for a while, you may have noticed that the color has changed from clear to brown. While this may be alarming at first, it’s actually quite normal. The browning is caused by a chemical reaction between the alcohol in the Listerine and the oxygen in the air. This reaction is perfectly safe and doesn’t affect the efficacy of the product. In fact, you can continue using Listerine as usual and the color will eventually fade back to clear.

How to use it

Brown listerine is not harmful to use, but many people avoid using it because of the color change or smell (it might have gone rancid). It’s possible that your listerine may have gone rancid if you have been storing it for too long and/or at a high temperature which changes the chemical composition of the ingredients and causes them to break down over time into other substances that can cause an unpleasant odor.