I can't say that it is an xtreme rich foam shampoo. I wash my car with a Karcher foam sprayer (j6). By adding the regular Sonax shampoo along with this one, it creates more foam. I used up half of the shampoo trying to create more foam by: using only shampoo without adding water, conducting a test to compare the ratio, and I think the regular Sonax shampoos are better in terms of foam quantity.