I found several search results related to shampoo alla camomilla, but only a few of them provide information about the product details, positive and negative aspects, and ingredients or materials. Here is what I found:

• Garnier Ultra Dolce Shampoo allestratto di Camomilla e Miele: This shampoo is available on Amazon. It is designed for color-treated hair and has a fresh scent. However, there is no information available about the ingredients or materials used in this product.

• Pure Body and Hair Shampoo: This shampoo is available on the Alisea Parma website. It is a natural and organic multibenefit shampoo made in Italy. The active ingredients in this shampoo are rice and chamomile proteins. However, it is not clear whether this shampoo contains any negative aspects.

• Sensitive Shampoo: This shampoo is available on the Fitopets website. It contains camomile and avoids synthetic ingredients that can be harmful. However, there is no information available about the positive aspects of this shampoo.

Based on the search results, it is not clear whether shampoo alla camomilla has any negative aspects or what ingredients or materials are used in it.