For yellow rings on shirts caused by skin grease or sweat:
- Some recommended to use an "Oxyclean" stain remover or stain remover stick for cleaning.
- Some recommended to use dishwashing detergent to brush and wash the stains, saying "dish washing liquid is designed to remove grease, and why buy another product (that doesn't work very well -- I've tried) when you already have one that does?"
From a chemistry perspective, do dishwashing detergent and stain remover powder/stick have similar chemical composition and a similar ability to remove collar yellow rings?
Original dirty collar
After dishwashing detergent and laundry detergent