A golf impact indicator immediately shows you visually where the ball impacts the club face.
If you hit the ball on the toe, heel, or even just too high on an iron club face the shot will not feel pure, will lose distance and usually ends up off line.
Alignment, improper swing plane, unstable rotation, and other factors cause inconsistent shots resulting from missing the sweet spot on the club face.
Golfdust and other spray on golf impact indicator products are more popular than the older tape indicators now.
I have used talcum powder which works good enough for me. Some spray on products stick to the club face. If you choose to use a spray on product make sure the product is easy to wipe off the club.
Make sure that when using a golf impact indicator that you learn to "feel" a toe hit and other off center hits to improve your ability to sense what is happening through your hands.
