Even if the product says it is a puppy perfume, you’re not supposed to apply any fragrances on puppies younger than 6 months of age. Their immune system is not yet fully mature at this time so nobody knows how a puppy will react to the application of a generally-mild substance. These formulations may be mild in the general context of dogs; however, the implication is that their bodies are already fully capable of processing the various chemicals that may be inherent in such products.\r