adamlea87
Well-Known Member
Blue bleaches usually use a pigment called ultramarines, which is also used to "whiten" the yellow tinge found in some textiles and papers.
Although I believe it only gives a very soft effect, there are of course other bleaches that use direct dye to give a more intense colour result (I guess Magma, Color Graphics?)
The formulation of the bleach will determine how clean it lifts (persulfates, ammonia...) and this will vary product by product. Some bleaches also contain ingredients to control the speed of the lift.
So I would say there is not hard rule when it comes to white vs. blue bleach you would have to read the individual product information.
Although I believe it only gives a very soft effect, there are of course other bleaches that use direct dye to give a more intense colour result (I guess Magma, Color Graphics?)
The formulation of the bleach will determine how clean it lifts (persulfates, ammonia...) and this will vary product by product. Some bleaches also contain ingredients to control the speed of the lift.
So I would say there is not hard rule when it comes to white vs. blue bleach you would have to read the individual product information.