I totally understand your concern about chemicals in products for a child. A huge concern is also fragrances, which can be a big sensitizer, especially for children and those with sensitive skin.

I know you said you wanted a natural conditioner. However, I have to say that natural doesn't always equal safe. This is misinformation "natural" companies put out there to sell products. In fact, many of these so-called natural products have the exact same ingredients as the "unnatural" ones, but they dress them up by adding in exotic and essential oils, which are highly irritating to sensitive skin. I'm not anti-natural, but I hate it when people are deceived by all the misinformation being put out there.

If I were to use a shampoo and conditioner on a small child, I would first choose Paula's Choice shampoo and conditioner. Out of anyone, she has spent her entire career researching every ingredient used in products. Many companies rely on fear and old wives tales about ingredients that are scientifically shown to be very safe. while slipping in ingredients that are truly harmful or irritating. Paula's product has no fragrances, and every ingredient has been carefully, and scientifically researched (in published, peer reviewed journals, not "clinical studies" that are paid for by the very companies that hire these "clinics" to give them specific results to be "proven"). It is a bit lighter than some of the other conditioners I recommend. However, I just use more to comb through my hair, and when it's dry, I go over my ends again with more of the conditioner.

That being said, there are several low-fragrance conditioners and shampoos I recommend on the site. Some good ones are Naturelle Fragrance Free Conditioner (and shampoo) as well as Jasön Fragrance Free Daily Shampoo.

However, the irony is that thought Jasön and Naturelle say they're fragrance-free, they actually do contain fragrance oils. They don't have much of a fragrance, so those fragrance oils are probably present in low amounts.

Another thing to look out for is that some products have the preservatives Methylchloroisothiazolinone and Methylisothiazolinone in them. Though it's commonly believed that in the low concentration used in cosmetic products that there isn't enough present to cause irritation, other sources say it may cause sensitization for those with sensitive skins. The Naturelle products have this preservative in them.

Shikai conditioner would be another good choice. The ingredients are okay, though it has only a tiny bit of fragrance. It does have diaolidinyl urea as it's preservative, which has had some controversy. Unfortunately, all preservatives have the potential for causing irritation. It's light like Paula's products, so you'd need to use a bit more.

It's frustrating to find good products that work with hair like ours that don't have something potentially irritating or sensitizing in them. I'm still out there searching for good products, but so far, these are the best ones I've found.