I was told that both 'loving care' and 'beautiful browns' by clairol do not contain the ingredient "PPD" which I had an allergic reaction to. Loving Care conly lasts 6-12 shampoos. Can someone tell me how clairol's 'beautiful collection'(medium ash brown) is different and if it's 'better' in any way? I would rather not have to apply it every week but don't want any bad reactions to it either. Thanks