How does adding a little blue make appear black blacker and white whiter?
How is it that ‘blue-back’ appears blacker than actual black, e.g. eyelash dye, and bluish-white appears whiter than actual white, e.g. blue colourants added to washing powder to make whites appear brighter?
It’s intuitively illogical that blue could achieve both ends, yet it’s true. How is it so?
Sorry, title should read "made black appear blacker…"
Black: [...]
Posted on May 31st, 2010 by admin
Filed under: eyelash dye | 2 Comments »