For our babies, we want only the best. Further, as never before, we are ready to compromise with the principle of precaution. One is sure to do his best: nevertheless, choosing a suitable cosmetic product is not that easy. What are the data available to help us decide of its suitability, of its interest, of its safety? An ad flyer (inevitably positive: its duty is to make the consumer buy it more than to give pieces of information!), a list of ingredients … to a large extent beyond understanding, more or less informed opinions by other users … This is quite few to get the clear and believable data that would help in choosing the most suitable product.