I love wearing white shirts and sweaters. My only problem? I hate cleaning them on laundry day. And I’m not alone: As many a Reddit post makes clear, white clothing, sheets and towels have a tendency to fade and yellow, leaving those crisp whites you happily bought turning into more of a sad, stained gray or off-white even when you run them through the washing machine. Amazon So how can you make sure your whites live up to their name when you’re doing the laundry? To find out, I asked  Patric Richardson , also known as the  Laundry Evangelist  and the host of “The Laundry Guy” on HGTV and Discovery+. Richardson previously appeared on our  Am I Doing It Wrong?  podcast. “The most common reason [white clothing stains or fades in the wash] is too much detergent,” Richardson says. “The detergent holds [a tinge] from the wash water and dulls white. The second reason is chlorine bleach.…