If dying blonde hair, dark dyes may leak onto the uncolored sections during the washing process, creating a dirty look.
When set (approximately 30 minutes), place the gel in the tank and just cover with 1× TBE buffer, load the samples, connect the leads to the power pack and run the gel at 70 to 100 volts until the dark blue dye (bromophenol blue) is about three-quarters the way down the gel (approximately one hour).
Once a DNA sample has been collected from an exhibit – and, hopefully, separated from any impurities or chemical inhibitors, such as the dark blue dye in a pair of jeans – the next thing to do is see how much human DNA you've got, and whether there's still anything else in there with it.
Perhaps, then, "Die it dark" (dye?) would work better shifted onto the next line to get a traditional "clinching couplet"!
Rather than making balls of two colors, they fabricated millions of tiny microcapsules, each containing a liquid mixture of oil, dark dye and tiny shards of white pigment.
Ten minutes later, he was again at the hospital, pumping dark dye into a sedated woman's heart, searching for blockages.
Repeated washings of the strongly coloured washcloth IW2 caused a slight change in colouration, which most probably is due the real-world washing conditions chosen by the authors, i.e. leaching of dark dyes from coloured shirts, socks and trousers onto the washcloth.
Stores can't stock enough dark dye, and natural blonds shave their heads, even eyebrows, with the hope that being hairless will keep them safe.
A few studies [ 17, 19] did suggest an increased bladder cancer risk among long-term users of dark dyes.
In addition, we stratified the analyses by hair dye color, because dye colors differ in chemical properties, that is, in general dark dyes contain higher concentrations of aromatic amines than lighter shades [ 32].
