In neat and natural cosmetics there are several classes of ingredients that tend to flag. Environmental toxins are those that cause damage to the planet, such as cyclical silicones that have been shown Bioacumulation in our water supply1 When they spin in drainage. There are drying agents such as sulfate and some types of alcohols that disturb the skin barrier, damage the microbiome and cause microscopic inflammation. Allergens and irritating can cause skin sensitivity over time, perhaps even leading to skin inflammation when you are older. They are also carcinogenic, which, despite links to diseases and cancer, still appear in many time-honored cosmetic products (though now less).