If I catch it on my daughter quick enough with fucidin it can be gone pretty quick. The best advice (given by my dermatologist) was to hold a warm flannel on it and quite roughly clean it - u need to take the yellowy bits off then put the cream on (be massively careful to not have any part of the flannel that touched it, then touch healthy skin or you will end up spreading it!) putting the cream on top of the yellow bits, means the cream has to work through the scabs. Hth and it clears quick for you both