A lot of everyday lip products contain polybutene, a liquid plastic. The “safe to swallow” case rests on old rat and dog feeding studies. Here’s what those reports say, and why I switched my daily lip product to 100% pure lanolin.
A lot of everyday lip products contain polybutene, a liquid plastic. The “safe to swallow” case rests on old rat and dog feeding studies. Here’s what those reports say, and why I switched my daily lip product to 100% pure lanolin.
