I would personally not risk leather cleaner on the Heritage line. The reason is it's like the Madelines...the dye is not cured that well, and it has a tendency to lift fairly easily. I guess white may not be as bad as some dyes, but I would really try conditioner or a damp cloth first..sometimes you can use a tiny bit of gentle soap like Dove. Don't get it very wet, and don't rub hard. You can spot the leather with too much water or soap. Leather cleaners are harsh..at the very least I would dilute the heck out of the cleaner before proceeding. Sometimes I just use conditioner and tape, but it just depends on whether it's color transfer or just light dirt, etc.