I've used it since the 1st time I bathed Jack - I think they tell you not to use anything the 1st couple of weeks as it may irritate babys skin? Jacks skin was a little dry on his feet & hands but I think that would have happened whether I used anything in his bath or not. I use the normal baby bath in the blue bottle & the night time one in the purple bottle, I also use the shampoo on his hair, the night time lotion on his skin & the moisturiser on his face - no probs at all.