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 Henna is a natural temporary coloring agent obtained from leaves and tender stems of the plant,  Lawsonia imtermis. Used on skin and hair, it gives a typical brownish orange hue to the part.  Henna and hair color Henna gives a typical color to the hair. It hides whites but does not blacken it unfortunately. Hence it is not a versatile hair dye. It also takes many hours to produce effect. The color though natural is not permanent. But how safe is it? Henna for hair and its safety Since henna is natural, it is a natural tendency to think that it is a safe option to the chemical dyes for hair. But is it so really? Henna does not penetrate into hair shaft and only remains on the hair surface. Hence it sits there preventing any hair conditioner to reach the hair cuticle. Hence hair could become lifeless and brittle with repeated use. Henna per se does not condition the hair.  Though predominantly non-allergic, henna does have a low allergic tendency. But some cases of al...

  It is a word of caution for people who think that once they have the COVID-19 vaccine, they are protected. Many health care workers and those who take the COVID-19 vaccine have tested positive for the virus days after the first of the two doses of the covid-19 vaccine. Matthew W, an ER nurse from California is one such vaccine who became ill after 6 days of the Pfizer-BioNTech vaccine. What could be the reason for it? Matthew W and his coronavirus history On 18 December 2020, Matthew W, an ER nurse at two different local hospitals of California had received the Pfizer-BioNTech vaccine along with his fellow health care workers. He had posted a message about it on his Facebook page. He had told later ABC 10News that his arm had felt sore for a day. But besides that, he got no other ill-effects of the vaccine. Matthew W [Source: 10 News] On Christmas Eve, Matthew, 45 completed his duty in a COVID-19 unit and then fell ill. First, he had chills and later severe muscle aches an...