The jacket looked fine in the closet and came out flaking at the collar, and the first instinct is to blame the last cleaning, or the rain, or the way it was folded. None of those caused it. Most faux leather is a polyurethane, PU, coating applied over a fabric backing, and that coating degrades through a process called hydrolysis, a chemical reaction where moisture breaks down the polymer over time. The polyurethane coating develops fine surface cracks before it starts visibly flaking or peeling away from the backing, and by the time you see flakes, the chemistry has been running for months. Humidity, sweat, and even cleaning products supply the water. Heat, direct sunlight, and friction from regular handling speed the reaction up significantly, which is why a bag stored in a hot car trunk or left on a sunny windowsill fails faster than one kept in a closet.
PVC faux leather fails differently, and the difference matters when you are deciding whether to repair or replace. Polyvinyl chloride degrades through the loss of plasticizers, compounds added to rigid PVC to make it flexible. Plasticizers are not chemically bonded to the PVC, so they slowly migrate out over time or evaporate when exposed to heat. As the plasticizer content drops, the PVC film loses its suppleness, becomes stiff and hard, and cracks and peels, particularly in areas that flex or bend frequently. UV light breaks down chemical bonds in the polymer structure in both materials. Harsh cleaners containing ammonia, alcohol, or bleach chemically attack and dissolve the polymer surface, which looks like wear but is actually depolymerization. The fine cracking and wrinkling near stress points, like a zipper or a fold, is the early visual sign that hydrolysis has begun, and it is the moment to act, because the damage spreads from there.
Here is the honest verdict, and it is the one every repair guide agrees on: you cannot truly fix peeling faux leather, because the coating is breaking down and will not bond back as new. You can disguise it. For small, early patches, start by gently removing loose, already-flaking coating with a soft brush rather than picking at it, since pulling on partially-attached material widens the damaged area. A flexible leather paint matched to the color can be applied in thin layers directly over the affected area, allowing each layer to dry fully before adding the next. For structural cracks rather than surface peeling, a flexible fabric-leather adhesive applied underneath lifted edges, followed by firm pressure while it sets, can reattach coating that has not fully detached yet. Larger sections where the fabric backing is fully exposed need a patch: a color-matched vinyl or PU patch, glued with a flexible adhesive, extending at least half an inch past the damage.
Widespread flaking is the line. When the coating is coming off across the whole item, no filler or paint will hold, because the polymer underneath is still breaking down and the repair will peel with it. That item is done, and the money is better spent on the next one, chosen with the failure in mind. Prevention is the only real defense, and it is simple: keep faux leather away from prolonged heat and direct sunlight, clean it with a non-abrasive cloth dampened with mild soap and water, wipe it dry immediately afterward, and never use alcohol, bleach, or ammonia cleaners on it. A specialized faux leather conditioner keeps the polymer pliable, and a garment kept in a cool closet will outlast the same garment left in a hot car by years. The coating has a lifespan. How you store it decides how much of it you get.
Keep reading: Real Fur vs Faux Fur: Part the Hairs and Look at the Base, Bonded Leather Is Barely Leather, and the Label Knows It, and Superfake Handbags: When the Copy Passes the Eye Test cover the nearby cases in this series.
Most faux leather is a polyurethane coating over a fabric backing, and it breaks down through hydrolysis, a chemical reaction where moisture in the air cleaves the polymer chains. Heat, sunlight, humidity, and friction accelerate it. PVC faux leather fails differently, by losing the plasticizers that keep it flexible.
Small, early patches can be disguised, not truly fixed. Remove loose flakes with a soft brush, then apply flexible leather paint in thin layers, or glue lifted edges with a flexible fabric-leather adhesive. Widespread flaking cannot be repaired, because the polymer underneath keeps breaking down and the repair peels with it.
Heat, direct sunlight, humidity, and friction. A bag stored in a hot car trunk or left on a sunny windowsill fails faster than one kept in a closet. Harsh cleaners with ammonia, alcohol, or bleach chemically attack the polymer surface and speed the breakdown.
Keep it away from prolonged heat and direct sunlight, clean it with a soft cloth dampened with mild soap and water, wipe it dry immediately, and never use alcohol, bleach, or ammonia cleaners. A faux leather conditioner keeps the polymer pliable, and cool, dry storage adds years.