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Pulled from another website
A rinse is a semi-permanent hair color. It stains only the cuticle that fades away in 6-8 shampoos. There is no mixing and should be used straight out of the bottle.
A glaze is a demi-permanent hair color that does not lift or lighten. It penetrates the cuticle and deposits hair color into the cortex.
Demi-permanent hair color works with very low peroxide that won't damage the hair. It deepens hair color throughout the whole head of hair.
It's good for toning down bleached-out, brassy, end-of-summer highlights and enhancing your natural hair color. It can also be used as a tint back to natural hair color or on sensitive overly damaged hair. Plus, it seals the cuticle, making hair color ultra glossy.
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I use Wella demi charms after I relax (on relax day), which I follow up with a deep condition.The demi works better to protect my hair which is why I'm partial to it.
I have used jazzing once but didn't have great results with it. Lots of people here have used Colourshines with good success. I'm still thinking to give it a shot one day though.
As far as doing a DC after I think you may want too think about it because sometimes a color can dry your hair out. What I don't know with Jazzing is if that will pull a lot of color off or not, but its very possible.
-A