Is this common knowledge or is it just me who didn't know of this?
How did I not know this?
Despite what the adverts say, it is very difficult to transform grubby clothes into dazzling whites with nothing but elbow grease. To get around this problem, washing powder manufacturers add a special substance (called an optical brightener) that absorbs UV light ( Read more... )
Despite what the adverts say, it is very difficult to transform grubby clothes into dazzling whites with nothing but elbow grease. To get around this problem, washing powder manufacturers add a special substance (called an optical brightener) that absorbs UV light ( Read more... )
Comments 2
Reply
Reply
Leave a comment