Review (4/5): The shampoo is excellent and the conditioner works well on tangles, but is slightly greasy
Overall, these are both nice products, but, for the reasons described below, I like the shampoo a bit more than the conditioner. If I had the option to review them separately, I would give the shampoo 5 stars and the conditioner 4 stars.
For both the shampoo and conditioner, the fragrance is pleasant, light, and not overpowering. They are marketed as hypo-allergenic, and, in fact, they seem to be so: I have not noticed any trouble with my daughter, who is allergic to fragrances and perfumes. The shampoo cleans her hair well and the conditioner works quite well for de-tangling, which was the primary reason that I bought this set. It is a much better detangler than other kids shampoo and conditioner.
My only complaint with the conditioner is that it is quite difficult to rinse out entirely and leaves my daughter's hair looking a bit greasy the next day. I have not used it as a leave-in, but considering how greasy it leaves the hair after a rinse, I cannot imagine that it could reasonably be used as a leave-in product. Considering how well that the conditioner otherwise works, I'm still pretty happy with it. But if you or your family members are prone to oily hair, you may want to look for a different product.