ClearBraIsPaintProtectionFilm.Here'sHowtoJudgetheInstall.

Clear bra is the old name, from the days when people put a black vinyl bra on the front of a car to stop rock chips. The clear version replaced it, and the name stuck. Today clear bra, PPF, and paint protection film all describe the same thing: a clear, thick urethane film applied over painted panels.

There are a handful of well-known film brands, and their premium films are close enough in performance that the brand is rarely what separates a good job from a bad one. The install does, and most of it can be judged by eye.

Prep decides how it looks for years

Film is clear, which means it shows everything under it. Any dirt, wax residue, or swirl marks on the paint stay visible through the film for as long as it is on the car. A proper install starts with a full decontamination and, on most cars, a polish, so the paint under the film is the best version of itself.

If an installer plans to go straight from a wash to film, ask why. On a brand new car with perfect paint it can be fine. On anything else, it means sealing the defects in.

Edges: wrapped or not

The film's edges are where you see the quality of an install. On many panels, the film can be wrapped around the edge of the panel, so the cut line is hidden on the back side. When it is wrapped, the film edge is invisible from normal viewing and less likely to collect dirt or lift.

Not every edge can be wrapped. Some panels have tight gaps or sharp shapes. But a good install wraps wherever the panel allows, and where it cannot, the edge is straight, even, and a consistent distance from the panel's edge all the way along.

Pre-cut or custom

Most film today is cut by a plotter from a pattern made for your exact vehicle. That keeps blades off your paint, which is the biggest risk in film installation: a knife cut through the film goes into the clear coat too. Some installers trim patterns larger so they can wrap more edges, and some cut parts by hand on the car. Either can be done well, but if anyone is cutting on the car, ask how they protect the paint.

You should see the paint through the film, not the film on the paint.

What a good install looks like up close

• No dust specks or hairs trapped under the film when you look across the panel in daylight.
• Edges that sit flat, with no lifting corners.
• No stretch marks or distortion lines, especially around curves like mirrors and bumper corners.
• Seams, where two pieces meet, placed in spots you would not normally look, and kept to a minimum.
• No knife marks in the paint at the film edges.

Small water bubbles or slight haze in the first days are normal. That is the installation solution drying out from under the film, and it clears as the film settles. Specks of dirt and lifted edges do not clear. Those are install problems.

The first week

XPEL, one of the largest film makers, says to wait 48 hours before washing a car with new film. After that, its guidance is to keep a pressure washer well back from the film, never aim it at the film edges, and clean edges gently with a soft mitt or brush. High-pressure water at an edge is the easiest way to lift new film.

• No washing for the first couple of days.
• No pressure washer close to the film or at the edges, ever.
• No automatic brush washes.
• Leave small bubbles alone. Do not press or pick at them.

Coverage, briefly

Coverage ranges from a partial front, which covers the bumper and the front part of the hood and fenders, to full body. We wrote about how to choose in our post on paint protection film versus ceramic coating. The short version: full front covers where most chips land without leaving a visible line across the hood, and it is the most common choice for cars that see freeway miles.

If you are getting film quotes, ask each installer what prep is included, which edges they wrap, and how they cut the film. If you want our take, send photos of the car and tell us how you drive it.