A common ingredient in many laundry detergents, optical bleaches (“fabric brighteners”) act by reflecting blue light.
The blue light combines with the yellow discoloration in a fabric to produce white light that makes the fabric seem brighter.
A common ingredient in many laundry detergents, optical bleaches (“fabric brighteners”) act by reflecting blue light.
The blue light combines with the yellow discoloration in a fabric to produce white light that makes the fabric seem brighter.