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Any hairdressers or seasoned hair dyers out there? I am probably about to ask a silly question! I am going to try a new hair dye this week, so I want to do an allergy test before. I've opened up the box and there is no instructions on which product I test. Choice is:Lightening powderDeveloper creamLightening creamShould I try one or all? And once opened don't they have to used immediately? I've googled but Loreal frequently asked questions gave no specific info.Thank you
I think you need to make up a small amount of the solution (are you meant to mix all three ?)Are you doing a strand test as well as an allergy test?
Ah that's a good idea! I don't usually do a strand test, to add the element of surprise
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