Materials & surfaces

The material decides what is safe before the stain does. Each page lists sourced care constraints, and — in keeping with the site's rules — says plainly what we could not source.

Fibers

Cotton & linen Strong plant fibers — but heat shrinks them Wool Protein fiber — alkalinity and heat are the enemies Silk Protein fiber that weakens when wet Polyester & synthetics Tough but very heat-sensitive Rayon / viscose Weak when wet — handle gently

Surfaces

Leather & suede Blot only — most stains are a professional's job Carpet (synthetic) Blot, never scrub; cleaner goes on the cloth Carpet & rugs (wool) Low-alkalinity chemistry only; never over-wet Upholstery cleaning codes W, S, W/S, X — the tag decides what's allowed · weakly sourced Marble & natural stone Acids etch — blot, don't wipe, and use poultices for deep stains Wood furniture Dry slowly, test everything on a hidden spot Vintage & heirloom textiles When in doubt, don't — conservators exist for a reason