TikTokers are finding razor-blade slots in their bathroom mirrors and medicine cabinets.
The slots are common in homes built before 1970 and would let people "dispose" of their old blades.
The used blades would pile up in a space behind the bathroom mirror.
Recently, some TikTok users have gone viral after claiming they've unearthed old razor blades in the walls of their bathrooms.
The old razor blades seem to be a result of small slots in some medicine cabinets common in homes built before the 1970s. Before plastic, disposable razors became the norm, the slots were meant for people to "dispose" of the used blades, Reader's Digest said.
The slots led to a hole in the wall, so the blades would pile up behind the mirror.
TikTokers are showing the old razors they say they're finding
One of the first TikTokers to post about finding the vintage razor-blade slot in her home was user @carlyknight, who goes by Carly Knight on the app.
According to her TikTok videos, Knight posted a tour of her 1950s-era home, and one user commented that she probably had a razor slot in her bathroom. Knight later showed that in her medicine cabinet, there was, in fact, a small slot labeled "Used razor blade disposal."
Since Knight posted the video, it's received 3.8 million views, and TikTokers joked about the design in the comments section.
"People in the '50s like, 'Nah we'll all be gone when this becomes a problem,'" one user wrote of the used razor blades.
Another added: "People back then were so 'out of sight, out of mind,' like it doesn't just disappear, Beverly."
More than 150 people have since used Knight's sound clip on TikTok to show their own discoveries of razor slots in homes they said were built in the 1920s to the mid-1970s. Some users, such as @noah_quay, have even removed the cabinets to uncover dozens of rusty, used razors.
Melissa Alicea saw Knight's video and immediately checked her bathroom.
Alicea told Insider she's lived in the apartment building, which was built in 1966, for seven years, but she never noticed the slot or the writing above it that reads "razor blades."
Lived here 7 years, noticed the slot, never read the “razor blades” part. 🤦🏻♀️
♬ Vintage girl carlyknighht - Carly Knight
"I must have looked at it a thousand times before, but it never registered," she told Insider via Instagram. Since she's living in an apartment that she rents, she said she hasn't tried to remove the cabinet to check for old blades.
Homes built before the '70s may still have razor slots
Reader's Digest said that blade slots were prevalent in homes built before the 1970s, when safety razors were a common choice for household use.
In 1903, Gillette introduced the first modern, double-edged safety razor, which was a safer, easier option than using a straight-edge razor at a barbershop, Gizmodo reported.
Safety razors gained popularity, but homeowners were faced with the challenge of how to dispose of the blades.
Throwing them in the trash had safety issues, and the blades couldn't be burned, Reader's Digest said.
That's why builders started adding a slot that would allow people to drop their used blades in a gap between the wall's studs. The spaces were large enough to hold thousands of razors, which allowed homeowners to essentially forget about the problem.
But today, people living in or remodeling these homes are discovering the quirky feature, and the old razors left there by previous owners.
Read the original article on Insider