You need to read the labels. Just because it has Xylitol, doesn't mean it doesn't have other harmful ingredients. Here's an example: http://tinyurl.com/34hfw6 Read the ingredients.
Here's one of them.
Titanium dioxide has recently been classified by the International Agency for Research on Cancer (IARC) as an IARC Group 2B carcinogen ''possibly carcinogen to humans''. Titanium dioxide accounts for 70% of the total production volume of pigments worldwide. It is widely used to provide whiteness and opacity to products such as paints, plastics, papers, inks, foods, and toothpastes. It is also used in cosmetic and skin care products, and it is present in almost every sunblock, where it helps protect the skin from ultraviolet light.
Here's more: "Sodium Methyl Cocoyl Taurate "
"The following chemicals can cause nitrosamine contamination, which have been determined to form cancer in laboratory animals. There are wide and repeated concerns in the USA and Europe about the contamination of cosmetics products with nitrosamines. 2-bromo-2-nitropropane-1,3-diol Cocoyl Sarcosine DEA compounds Imidazolidinyl Urea Formaldehyde Hydrolysed Animal Protein Lauryl Sarcosine MEA compounds Quaternium-7, 15, 31, 60, etc Sodium Lauryl Sulfate Ammonium Lauryl Sulfate Sodium Laureth Sulfate Ammonium Laureth Sulfate Sodium Methyl Cocoyl Taurate TEA compounds