I too have noticed the wear through the creases over time, and yes after some time the creases do not always come out in the wash. Ironing creases does wear the threads in those areas.
I think some priests do like the creases to be extra sharp and don’t mind a bit higher linen turnover. As you’ve pointed out, some also want the particular qualities that require starch to achieve while others want only sizing or nothing at all.
It all depends on what Father wants!
I consider it a penance to soak and wash the 3 metre long altar cloth. Especially if there was red wine used for the Eucharist. Salt does sometimes help to get the stains out but it is a big heavy cloth to wring when I am alone.
It seems like bleach is the only fluid/detergent that gets spots out of white fabric. Smells strongly but purificators can be washed an extra time. It is important that bleach not gets close to embroidery done in colour. Those who wear lipstick could volunteer in the sacristy and help with doing laundry.
I totally understand why white wine is used in the parishes around my greater area.
You are so right about embroidery. I had some embroidery transfer from one part of a corporal to another one. It took far longer to get that stain out than to get the original stain, and I felt very lucky that the piece wasn’t ruined entirely. I haven’t been doing this for many years, but I feel as if I’ve made 75% of the possible mistakes.
That reminds me I was also warned to use only oxygen bleach (like Oxi Clean) but never chlorine bleach on linen, because it will turn linen yellow. I tried the peroxide-and-Dawn method and got a yellow stain that I never could get out (but I think my peroxide was over a year old. Never use expired hydrogen peroxide!)
I’ve used a 2-3 day cold water soak to get out rose wine stains with no other treatment, but those are purificators stained within the last 10 days. I found this out by accident; I intended to soak them a few hours and was distracted. Overnight usually does it; the main thing is that fabric soaking in water must be 100% submerged without air trapped. (Where there is both water and air, you’re asking for mildew.) I’ve seen wet fabrics start to show mildew in 2 days or so, but I’ve submerged something literally for weeks and had no mildew. (Borax is a great way to kill mildew and its spores, if you have that problem. It helps get out the stains, too, but mildew stains are a pain to get out and weaken the fabric even if you can get it white again.)
I have also heard sodium lauryl sulfate produces some amazing results, with the advantage that it is neutral and safer for old or fragile fabrics. It is sold as quilt detergent or horse shampoo. I haven’t been able to get any yet, but I’ve ordered some.
The main thing with stains is to avoid getting the stain both dry and hot at the same time. That sets them.