
Generally, a touch-up pen will dry completely within two hours after application. It's advisable to let the car sit indoors for a while after using the touch-up pen before driving it out. During summer when temperatures are high, it's best to avoid getting the car wet for two days after using the touch-up pen. In winter, it's recommended to avoid contact with water for four to seven days. Here are methods to deal with scratches on the car: Hairline Scratches: Hairline scratches can usually be removed by polishing or applying a rubbing compound. A gentle wipe is often enough to make the scratch disappear. Light Scratches: For light scratches that haven't damaged the car's primer, toothpaste can be very effective. Toothpaste works particularly well on marks left by other vehicles' paint during minor scrapes or residues from sticky products like adhesive tapes, often cleaning them off completely. Moderate to Deep Scratches: Moderate and deep scratches cannot be fixed by rubbing. For small dents no deeper than 5mm, they can be leveled by filling with putty before applying touch-up paint.

The drying time of touch-up paint varies from person to person, but based on my extensive experience, surface touch-dry usually takes 30 minutes to 1 hour, depending on weather conditions. On hot summer days when I park my car in direct sunlight, the paint becomes untraceable to touch within 20 minutes after application. However, during damp winter conditions, I've waited a full two hours. For complete curing—when the paint hardens enough to withstand car washes or rain—it generally requires 24 to 48 hours or more. I recommend avoiding car washes for at least 48 hours after application, otherwise the fresh paint may wash off. Additionally, applying paint too thickly will prolong drying; thin coats work better. To speed up the process, choose a well-ventilated and dry location, but avoid using hair dryers as high heat can cause bubbling. For safety, keep children and pets away until fully dried to prevent accidental contact. The entire process tests your patience, but it's worthwhile for handling minor scratches.

When does the touch-up paint dry completely? From a car repair perspective, there are several influencing factors. On hot days with higher temperatures, it dries faster—if above 20°C, the surface may dry within half an hour. High humidity can delay drying, especially on rainy days, so it's best to wait for clear weather before applying. The thickness of the coating also matters; thinner layers dry faster. For full curing, I estimate it usually takes one to two days before the paint can withstand normal water exposure. Some products have different compositions—for example, water-based paints dry slower than oil-based ones. After application, avoid washing the car or exposing it to rain too soon, as this can cause peeling or wear. Testing if it's dry is simple: lightly touch it with your finger—if nothing sticks, the surface is dry. For long-term care, keep a small repair kit in your car to address scratches promptly. Ensure the environment is clean and dust-free to prevent particles from affecting the finish.

The drying time for touch-up paint repairs depends on specific conditions. In my daily experience, it takes at least one to two hours after application for the surface to stop being tacky. It's best to perform the repair in a garage or sheltered area to prevent wind from blowing dust onto the paint. Full drying takes about 24 to 48 hours. If you can't wait, you can drive short distances at low speeds, but avoid exposing the car to rain. If it's raining or there's dew, I always postpone usage for a few days because humid conditions slow down drying. Simple maintenance makes small scratch repairs convenient, but remember to wait until completely dry before washing the car to prevent damage to the paint layer.


