It contains chlorine dioxide - a bleaching agent.
Going grey can also be caused by a buildup of naturally occurring hydrogen peroxide, that when left untreated, can cause a bleaching effect.
Africa is experiencing a "massive trend of increased use of skin bleaching, particularly in teenagers and young adults," said Lester Davids, a physiology professor at the University of Pretoria in South Africa.
"We hypothesized that the symptoms were due to differential bleaching of photo-?
Scientists have found that these chemicals, when washed off the skin and into the ocean, can cause coral bleaching.
But for many people the process is prohibitively expensive, costing up to ￡1,300(＄2,096) for laser treatment and as much as ￡700(＄1,128) for professional bleaching.
Years of heat styling and bleaching can build up to create major damage.
UNPRecedented coral bleaching in consecutive years has damaged two-thirds of Australia's Great Barrier Reef, aerial surveys have shown.
Mass bleaching is occurring on the Great Barrier Reef for the second consecutive year, they said.
The experts from James Cook University (JCU) say it is the most extreme case of mass bleaching they have ever measured at the World Heritage Site.
At least 35% of corals in the northern and central parts of Australia's Great Barrier Reef have been destroyed by bleaching, Australian scientists say.
NOAA this year announced that the world was in the midst of only the third global coral bleaching event ever recorded.
He looked up at the mountainside, the path twisting upwards towards the cairn cross, the white heat bleaching the rock.
In the Au grow the yellow water-lilies and brown feathery reeds; the dark velvety flag grows there, high and thick; old and decayed willows, slanting and tottering, hang far out over the stream beside the monk's meadow and by the bleaching ground; but opposite there are gardens upon gardens, each different from the rest, some with pretty flowers and bowers like little dolls' pleasure grounds, often displaying cabbage and other kitchen plants; and here and there the gardens cannot be seen at all,
