Tag: stains
How to Grade Underarm Staining on Used Shirts Without Guessing
Underarm yellowing is either surface residue or set-in fiber damage. Here is the lift-and-light test that tells you which, and where each lands on the grade scale.
Fading vs. Discoloration on Vintage Cotton Tees: How to Grade Sun Damage and Staining Differently
Fading is even, gradual color loss. Discoloration is localized and often permanent. Here is the five-step test that sorts them and sets the grade on a vintage cotton tee.
Fading vs. Discoloration: How to Grade Sun Damage and Chemical Stains Separately
A faded shoulder and a bleach spot look similar but grade completely differently. Here's the defect taxonomy that separates UV fading from chemical discoloration.