Criticism and controversy

Further information: Campaign for Safe Cosmetics and Testing cosmetics on animals

During the 20th century, the popularity of cosmetics has increased rapidly. Cosmetics are used by girls at an increasingly young age, especially in the United States. Due to the fast-decreasing age of make-up users, many companies, from high-street brands like Rimmel to higher-end products like Estee Lauder, have catered to this expanding market by introducing more flavored lipsticks and glosses, cosmetics packaged in glittery, sparkly packaging and marketing and advertising using young models.[citation needed] The social consequences of younger and younger beautification has had much attention in the media over the last few years.

Criticism of cosmetics has come from a variety of sources including some feminists, Islamists, Christianists, animal rights activists, authors and public interest groups. There is a growing awareness and preference for cosmetics that are without any supposedly toxic ingredients, especially those derived from petroleum, sodium lauryl sulfate (SLS), and parabens.
Numerous published reports have raised concern over the safety of a few surfactants. SLS causes a number of skin issues including dermatitis.
Parabens can cause skin irritation and contact dermatitis in individuals with paraben allergies, a small percentage of the general population. Animal experiments have shown that parabens have a weak estrogenic activity, acting as xenoestrogens.
Prolonged use of makeup has also been linked to thinning eyelashes.
Synthetic fragrances are widely used in consumer products. Studies concluded from patch testing show synthetic fragrances are made of many ingredients which cause allergic reactions.
Cosmetics companies have been criticised for making pseudoscientific claims about their products which are misleading or unsupported by scientific evidence.