While thinking through this experiment, I missed one potential factor that could change the results of my experiment. I thought that if I used different coloured nail polishes, the amount of solvent, hardening agents and type of colorants would be a major issue. I then decided to just use the same colour nail polish (but different brands) throughout this whole experiment. I came down to the decision to use black nail varnish.
I’m unsure whether or not the colour of the nail polish affects anything, but I just want to make sure, and make this test as fair and accurate as possible.
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