Work textured shower glass in two passes. First, wash with warm water and a little dish soap using a soft nylon brush driven along the grooves rather than across them, so the bristles reach the bottom of every channel. Second, rinse from the top down and blot the face dry with a waffle weave towel before water can stand.
Reeded and fluted glass has straight vertical channels, so a brush that follows them cleans the full depth in one stroke. Hammered, seeded and pebbled patterns have no direction at all, and small circular strokes reach into those dimples better than straight ones do. Whatever the pattern, the bristles have to be soft: nylon or natural fiber, never brass, never a scouring pad. Relief in glass is easy to clean and easy to ruin, and the high points take abrasion first, so damage shows up as a bright stripe running down the ridges.
Direction deserves a moment of thought before the first stroke. Hold the brush so the bristle tips travel in the same line as the channels, and start at the top of the panel so loosened film moves out of the pattern instead of deeper into it.
Soap left to dry in a groove is the same haze you set out to remove, and it comes back thicker each week. Rinse generously from the top so the water carries residue down and out rather than sideways into dry pattern. Drying matters even more. A blade only touches the peaks, so press an absorbent towel against the face, then run a corner of it along the bottom edge and the frame joint where water sits longest. Leave the enclosure open afterward and let the fan pull the humidity out of the room.
Water temperature earns its keep here as well. Warm water holds soap and body oils fluid so they rinse away instead of congealing in the low points, and it carries off the last of the residue faster than cold water manages.
Old film in deep relief will not surrender to one wash. Soak a cloth in warm distilled white vinegar, lay it against the glass and leave it ten minutes so the solution stays wet against the surface instead of running straight off. Brush along the pattern, rinse, and judge the result by feel rather than by eye: clean relief feels crisp under a dry finger, while filmed relief feels slightly slick. Two moderate treatments beat one aggressive one, and nothing powdered or bladed belongs anywhere near a patterned face.
Every week or two for a shower in daily use, and monthly for a guest bath. The interval depends on your water and how many people use the room, not on which pattern you chose. Judge it by touch instead of by looking, because a panel that still looks fine can already be carrying film down in the grooves.
Steam loosens soap film well and reaches into channels a cloth cannot, which makes it useful on patterned panels. Keep the nozzle moving, stay off hardware and sealant joints, and follow with a rinse and a blot dry, because steam lifts film without actually removing it. It also leaves the glass wet, and wet glass is where spotting begins.
Patterns photograph badly and read differently at arm's length than they do across a room. The selection wall in Lodi holds real glass in real thickness, so privacy, distortion and how much upkeep each face is asking of you are all settled questions before anything gets cut.
