There are certain signs and symbols you get so used to seeing in everyday life that it may never occur to you to work out what they actually mean. For many people, this includes a certain symbol found on the shampoo and conditioner bottles you pick up everyday in the shower.
The instantly recognisable symbol in question shows a little pot with the lid slightly lifted, containing a number. A number of TikTok users had no idea what this supposedly mysterious number stood for, and can't believe they're only just finding out after years of countless hair washes.
Taking to TikTok with a screengrab from Twitter, flabbergasted Denise - who goes by the username @denisephx_official - remarked that the revelation 'still blows her mind'.