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How to Stop Ringing Ears - Easy Methods You Can Try Today

 von AlisaSophia , 15.06.2019 06:50

On the market place today, there is now a safe alternative to all the StrictionBP Review popular energy drinks out there. A powder that you mix with water that is safe for you to drink, without any of the high levels of caffeine. It's a natural product you can drink 2 to 3 times a day to enhance your energy levels throughout the day without any of the health risks. It's safe for children, and cheaper than the energy drinks in a can. Allergies to hair dye are a common problem as about 5% of users develop a form of contact dermatitis and many hair dressers develop hand dermatitis. Dermatitis is immunologic skin reaction causing redness and itching generally on the scalp. One of the main causes of this a substance called PPD (4-Para Phenylene Diamine, C6H8N2) which is used in over two thirds of all permanent hair dyes.

Hair dye usually comes in two bottles, one is a PPD-based dye which is non-oxidised and colourless, and the other is usually hydrogen peroxide (H2O2) which is a developer. In the hair dying process the H2O2 is used first to break down the natural hair pigment: melanin. Then the PPD-based dye is added to replace the melanin. PPD reacts with the H2O2 becoming oxidised and coloured. It is in this form that PPD can cause allergies; fully oxidised PPD does not cause allergies. There are different types of allergies that you can develop:

Contact Dermatitis: where PPD molecules are destroyed by macrophages and cytotoxic T-lymphocytes which are both types of white blood which are cells of the immune system. These appear as granulomas which are ball-like collections of immune cells trying to destroy foreign substances. The skin becomes red, forming a rash that is itchy and has a burning sensation.

Contact Urticaria. This can develop in minutes to an hour after exposure. In this case PPD induces massive production of the antibody IgE which leads to swelling or oedema and skin redness. In extremely rare cases anaphylactic shock can develop as an allergic reaction. The face swells, you gasp for air and there is a fall in blood pressure, this condition is life threatening.

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AlisaSophia
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Registriert am: 11.05.2019

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