Hello there! It can be so frustrating to see a water mark on a gorgeous velvet sofa, but don't worry, it's often fixable. Based on discussions like the one in the provided Reddit link, the issue is usually not a true "stain" but rather the velvet pile getting crushed or matted and drying in the wrong direction.
The context from the YouTube link wasn't helpful, but here are a couple of go-to methods that experts recommend for lifting those marks and restoring the velvet's texture.
One popular technique involves re-dampening the area and carefully drying it. Lightly mist the stain with a spray bottle filled with distilled water (using distilled water is key to avoid leaving new mineral rings). Try to feather the mist out from the center of the stain to blend the area and prevent a new water line from forming. Then, grab a hairdryer on its lowest, coolest setting. As you gently dry the fabric, use a very soft brush, like a baby brush or a special upholstery brush, to gently fluff the pile back up, always brushing in the natural direction of the nap.
Another excellent method is to use steam. If you have a handheld garment steamer, hold it several inches away from the fabric and move it over the water-stained area. The steam will help relax and lift the crushed fibers. After a few passes with the steamer, use your soft-bristled brush to gently guide the pile back into its correct position. Always remember to test any method on a small, hidden spot first, and be gentle—never scrub velvet
