Holi ( /ˈhoʊliː/; Sanskrit: होली Holī) is a Hindu spring festival celebrated in the Indian subcontinent, also known as the "festival of colours".
It signifies the victory of good over evil, the arrival of spring, end of winter, and for many a festive day to meet others, play and laugh, forget and forgive, and repair broken relationships. It is also celebrated as a thanksgiving for a good harvest. It lasts for a night and a day, starting on the evening of the Purnima (Full Moon day) falling in the Vikram Samvat Hindu Calendar month of Phalguna, which falls somewhere between the end of February and the middle of March in the Gregorian calendar. The first evening is known as Holika Dahan or Chhoti Holi and the following day as Holi, Rangwali Holi, Dhuleti, Dhulandi, or Phagwah.
Synthetic colours
Natural colours were used in the past to celebrate Holi safely by applying turmeric, sandalwood paste, extracts of flowers and leaves. As the spring-blossoming trees that once supplied the colours used to celebrate Holi have become more rare, chemically produced industrial dyes have been used to take their place in almost all of urban India. Due to the commercial availability of attractive pigments, slowly the natural colours are replaced by synthetic colours. As a result, it has caused mild to severe symptoms of skin irritation and inflammation. Lack of control over the quality and content of these colours is a problem, as they are frequently sold by vendors who do not know their origin.
A 2007 study found that malachite green, a synthetic bluish-green dye used in some colours during Holi festival, was responsible for severe eye irritation in Delhi, if eyes were not washed upon exposure. Though the study found that the pigment did not penetrate through the cornea, malachite green is of concern and needs further study.
Another 2009 study reports that some colours produced and sold in India contain metal-based industrial dyes, causing an increase in skin problems to some people in the days following Holi. These colours are produced in India, particularly by small informal businesses, without any quality checks and are sold freely in the market. The colours are sold without labeling, and the consumer lacks information about the source of the colours, their contents, and possible toxic effects. In recent years, several nongovernmental organisations have started campaigning for safe practices related to the use of colours. Some are producing and marketing ranges of safer colours derived from natural sources such as vegetables and flowers.
These reports have galvanised a number of groups into promoting more natural celebrations of Holi.
