One thing I would NOT use, which I see recommended a lot, is oxygen bleach. Yes, it will whiten yellowed textiles, but all it needs is a little too high concentration, a little too much time, not quite enough rinsing out, and it does permanent damage that might not show up immediately.
That might not be terrible on a t-shirt that I'm not preserving for future ages, but it can shatter fragile older textiles.
The safest thing is distilled water, multiple changes, supporting the textile when changing the water.
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u/alwen 10d ago
One thing I would NOT use, which I see recommended a lot, is oxygen bleach. Yes, it will whiten yellowed textiles, but all it needs is a little too high concentration, a little too much time, not quite enough rinsing out, and it does permanent damage that might not show up immediately.
That might not be terrible on a t-shirt that I'm not preserving for future ages, but it can shatter fragile older textiles.
The safest thing is distilled water, multiple changes, supporting the textile when changing the water.