Just because you can't see bacteria, doesn't mean that it isn't there, and over time, it can build up and potentially cause problems for you in the future when the bacteria-covered product comes into contact with your face.
And one beauty-loving science fan has shared exactly why it's important that you regularly wash your make-up brushes - including any beauty blenders you may have.
Pamela Pedrozaa captioned her TikTok video: "Testing how much bacteria is on my beauty sponge", and she could be seen wearing gloves with a swab, preparing herself to be seriously grossed out by how much grew in the petri dish.
