This curiosity came after I noticed this on shirts that are washed and kept in the wardrobe, untouched for a long period of time (more than 2 months). Whereas the ones I regularly wear and wash do not have these visible stain.
I have tried googling why it is happening but the results simply show that it is due to oil/sweat build up and it only leads to more questions. Like if that’s the case why does it only happen after a long period of time when left alone, why does it happen to clothes that are washed before storage. Why does it not happen to clothing that are worn and washed regularly?
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Laundering cloths causes clothing to yellow.
To combat this natural yellowing cloths are dyed a shade of blue. The blue pigment is the blue flecks in powdered laundry soap and is responsible for the blue coloration liquid detergent.
Why does it not happen when washed regularly? the blue specs or coloration of the liquid reapplies the pigment correcting the color.
Why does it show up later after storage? the pigment has decayed so it’s not color correcting the cloth. If I remember correctly the pigment is a fine blue iron powder.
Why does it show up around the collars? more cloth and less pigment.
The cause of yellowing stains is purely sweat and oils from your body.
Have you ever seen old pillows when you take the pillowcases off, they’re yellowed or have big yellow spots? That’s sweat and oils from your body. Same with some mattresses -if it’s not urine of course (it honestly depends on how clean the individual is, of course by how often they change bedsheets, shower, or how much they naturally sweat).
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For what it’s worth the oxyclean spray is pretty good at removing ring around the collar in my experience. You can also use a paste made of oxyclean powder and a little water but this is much more of a pain.
Hope I’m not wrong about this but I learned that this is the reason you should wait until you’re going to use the shirt before ironing. As in not keeping ironed shirts in the closet. Might be an old wives tale though
Do you smoke? Or does someone else smoke in the house?
There was a time when every detergent in existence bragged about their about to combat **ring around the collar.** Of course, the true solution was for fashion to remove the tie first and then the collar all together.
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