SamSona
Member
I have seen a couple of posts about this recently so I thought I would explain for those who don't know this. Most tans with a guide color will turn green if exposed to extremes of temperature. This is why...
The guide color is made up from 3 colors: blue, yellow and red. Together they make the color brown. The blue and yellow pigment are robust and last well. However, the red pigment is very fragile and can easily degrade if left too long on the shelf, or if exposed to heat. Once the red pigment has degraded and died, all you are left with is the blue and yellow, which together make green.
So, your tan hasn't 'turned' green, it is just the absence of the red pigment which makes it so. One way to avoid this is to keep it in the fridge, but that is not always practical.
The guide color is made up from 3 colors: blue, yellow and red. Together they make the color brown. The blue and yellow pigment are robust and last well. However, the red pigment is very fragile and can easily degrade if left too long on the shelf, or if exposed to heat. Once the red pigment has degraded and died, all you are left with is the blue and yellow, which together make green.
So, your tan hasn't 'turned' green, it is just the absence of the red pigment which makes it so. One way to avoid this is to keep it in the fridge, but that is not always practical.
