Para-phenylenediamine (PPD) is a very common ingredient in most of the hair dye preparations. It accelerates the dyeing process and may produce local as well as systemic toxic effects when applied topically or ingested. There are various ways to detect presence of dangerous toxic adulterant para...
This modified electrode is successfully used to analyze the amount of p-phenylenediamine in hair dyes without preseparation procedures.doi:10.1002/elan.200900576Yu-Hui BaiJin-Yi LiYu-hua ZhuJing-Juan XuHong-Yuan ChenJohn Wiley & Sons, Ltd.Electroanalysis...
If you have allergy to PPD / paraphenylenediamine or are looking to color or dye your hair without using PPD you will find that most PPD-free products fall into one of three categories. One exception is the innovative Hairprint system — but first let’s look at the three main types. Pl...
PURPOSE:To obtain a hair-dye enabling fast-dyeing of hair without damaging the hair, free from stimulation and giving excellent feeling in use by using 1,2-hydroxy-1,4-naphthoquinone in combination with an organic compound containing nitrogen atom. CONSTITUTION:The objective dye contains 1,2-hydr...
The aromatic amine in the dye used in this case was para-phenylenediamine. Upon examination, the woman was found to have multiple retinal detachments that resembled the damage that can occur in retinopathies that are tied to certain enzymes found in the eye, called MEK1 or MEK2. The woman...
The main agents of hair dye–triggered allergic contact dermatitis are para molecules, especially PPD and its derivatives o-nitro-p-phenylenediamine and para-toluenediamine,32, 33, 34 which are highly sensitizing compounds. Darker dyes contain greater amounts of these substances.35 In normal hair-...
Currently, para-phenylenediamine (PPD) is the main ingredient used in permanent hair color products in the market and is the most important allergen. ... S Handa,R Mahajan,D De - 《Indian Journal of Dermatology Venereology & Leprology》 被引量: 34发表: 2012年 Elicitation of the immune respo...
Formulated without ammonia, peroxide, metallic salts and paraphenylenediamine (PPD) to provide a natural, cruelty-free and vegan-friendly dye, theLight Mountain Natural Hair Color & Conditionertransforms your hair using certified-organic henna leaf powder, keeping damage and breakage at bay. It also...
His invention was based on a new chemical, paraphenylenediamine, and provided the foundation of his company, the French Harmless Hair Dye Company. A year later, the name was changed to one that is more familiar today -- L'Oreal. L'Oreal, one of the hair product giants, has grown ...
Para-phenylenediamine based hair dyes are linked with very serious health problems: delayed hypersensitivity reactions (blistering and sores on your scalp), and is strongly linked with asthma, lupus, cancer, and non-Hodgkins lymphoma. Nearly all commercial hair dyes have P-Phenelynediamine or a var...