I use a paint system that is designed to stick in the paint chip instead of the existing finish. On a car like the photo shown, I will actually smear the paint on with a cloth or use a rubber squeegee. I admit I have a little fun with this when I do it at car shows. I work on some of the most expensive cars in the world, and I'll smear paint all over the hood. I hear gasps behind me. lol. After the paint sets up, about 10 minutes on a hot day, I'll use our special solution and a very soft t-shirt cloth, I'll gently rub off the extra paint, leaving ALL the paint chips filled. I've been doing this for over a decade, and have worked on over 30,000 cars, and I'm still amazed at the results.
The paint I use is designed to stick in the chip and not the existing finish. Traditional touch up paint will leave blobs. With this system, there are no paint blobs. The finish is smooth and the vast majority of chips will go away completely, the others will look much much better.