The following stamps are ones you can trust - and should look for - on any beauty product claiming to be natural.
To gain the 'organic' logo, there must be a minimum of 95% plant-based ingredients and a minimum of 10% of all ingredients must be organically farmed.
The coveted 'Eco Cert' cosmetics label requires a minimum of 50% plant-based ingredients in the formula and a minimum of 5% of all ingredients must be organic.
THE SOIL ASSOCIATION
Products must use the maximum amount of organic ingredients (95%). A product can say it has organic ingredients if they add up to more than 70% of the formula, however they cannot claim it is an 'organic' product as a whole.
Simply requires products to contain no genetically modified organisms.
NO ANIMAL TESTING
The rabbit logo means that no 'new' animal testing went on at ANY stage of the production process. To find companies that live up to these standards, this is a reliable directory: http://www.peta.org/living/beauty-and-personal-care/companies/default.aspx