1 straight hair cream
U.S. Food and Drug Administration in 2011 warned that some straight hair products contain various chemical substances, including hazardous substances such as formaldehyde. Formaldehyde is a strong smell of gas, it will irritate the eyes and nose, and cause allergic reactions such as asthma and other respiratory problems if inhaled, may also have skin rashes and itching appears.

Back in April 2011, the U.S. Occupational Safety and Health Administration (OSHA) to remind salon owners and employees, these products contain formaldehyde exposure risks and dangers. These products tend to have "no formaldehyde" logo, causing people to be misled, the selection should be more careful. According to the New York Times investigative reporting, the U.S. still have several one hundred salons offer hair straightening services, prices and even as high as $ 500, is very popular.

(2) skin bleaching creams
According to the U.S. Food and Drug Administration (FDA), H.264/AVC SVC beauty products, including skin whitening cream, contain high levels of mercury. Mercury commonly used in skin whitening cream, used to prevent the formation of melanin in the skin.

FDA said that in some soaps, lotions and anti-aging products, we found high levels of mercury, or non-US foreign manufacturers have made. FDA's senior medical adviser Li, MD, exposure to mercury, may cause serious health effects, damage the kidneys and nervous system, and the brains of fetuses and young children's development interference.

3 piece
eyes enlarged by young girls welcome contact lenses magnify tablets, can make your eyes look bigger. But experts say it may lead to serious vision problems. In 2010, the U.S. Food and Drug Administration (FDA) officials said that consumers without proper prescription or ophthalmic professionals help buy contact lenses, eye injuries and even will bear the risk of blindness.

According to ABC News, and many did not pass amplification chip FDA approval, but sold in the U.S., this is not only illegal, but also on the network is less than $ 20, the price may enable more consumers to buy the potential harm.

4
injection of botulinum toxin injection of botulinum toxin, cosmetic medicine is the current trend, relax muscles, reduce facial wrinkles. However, because of its own that is secreted by the botulinum toxin, overdose may cause rare but serious side effects, including injection site pain, headache, nausea and temporary muscle weakness.

2009, the U.S. Food and Drug Administration approved Botox for cosmetic use, but boxed warning label on the need to remind the toxin spread to other body parts of hazards, including symptoms of swallowing and breathing difficulties and even death.

5 Tattoo
2010, a study showed that people who get tattoos increased risk of hepatitis C. Especially if the tattoo needles had been contaminated with infected blood, then even more dangerous, tattoos are also prone to skin infections, causing redness, swelling and pain. According to the Mayo Medical Center, said, C-type hepatitis by virus attacks the liver and can lead to cirrhosis, liver scarring, liver cancer, liver failure and inflammation. Red, green, yellow and blue tattoo dye, can cause allergic skin reactions, such as itchy rash caused by the tattoo area and so on.