Soil-wetting agents break the surface tension of water and help water move through the soil profile. However, their composition differs from most surfactants. Many are based on nonionic surfactants mixed with for example polyoxyethylene esters, or ethoxy sulfates. When you apply these at too high a rate or too high a temperature they can cause membrane permeability problems. This results in the death of roots and leaf tissue.
Some surfactants dissolve cuticle/wax layers on the leaf blades causing discoloration and burning if allowed to stay on the leaf surface too long. Soil wetting agents like Hyroforce Ultra soil wetter contain no harmful chemicals that can cause turf burn. However, as with most things if you apply any chemical when it's blistering hot and don't follow the label regarding watering you are asking for trouble.