Numerous people use hair shading sporadically or normally so as to reestablish turning gray hair to its unique shading, or to change their hair shading to a progressively alluring or increasingly trendy shading, or even to restore their hair shading to its past tint after it has been harmed by synthetic compounds or sun blanching. Be that as it may, brief or changeless hair hues can have unfavorable wellbeing impacts. Other than making solid hair become dry or weak, a portion of the synthetic compounds in hair shading items have been connected with disease. Notwithstanding, it isn’t thoroughly certain whether hair shading items really bring on any types of disease. Numerous examinations have taken a gander at the inquiry, yet the outcomes are uncertain. 艶黒美人
Since hair colors and most expert applications contact the scalp a portion of the synthetic substances in the item can work their way into the numerous little veins that flexibly the scalp. From the scalp the synthetic compounds can work their way into the blood flexibly and into the body’s numerous organs, particularly the bladder.
A few investigations throughout the years have inferred a connection between bladder disease and hair shading items. An examination subsidized by the National Cancer Institute, performed by the Keck School of Medicine at the University of Southern California, and revealed in 2001 analyzed 1514 bladder malignant growth patients in Los Angeles with a populace of 1514 non-patients who lived in similar neighborhoods. The investigation was balanced for tobacco smoking, a known supporter of bladder malignant growth. The examination revealed that ladies who utilized lasting hair color month to month for a year or longer were twice as liable to create bladder malignant growth as ladies who didn’t utilize perpetual hair color. The examination likewise indicated that the individuals who utilized changeless hair color month to month for a long time or more were multiple times as liable to create bladder malignant growth. Further, the investigation indicated that beauticians and hairdressers with one year of introduction to hair colors were half bound to create bladder malignant growth and those with 10 years of expert presentation were multiple times bound to create bladder disease.
The USC concentrate likewise reasoned that there was not an association among brief and semi-changeless hair colors and bladder disease. These colors ordinarily last just half a month and wash out moderately rapidly. The American Cancer Society appraises that bladder malignant growth speaks to 6% of disease cases in men and 2% of malignancy cases in ladies.
Then again the Food and Drug Administration (FDA) and the American Cancer Society discharged an epidemiological investigation in 1994 that included 573,000 ladies. This investigation didn’t infer that a connection between the utilization of perpetual hair shading and passings from bladder malignancy among ladies existed.
Different examinations have concentrated on platelet malignant growths including lymphomas, leukemia, and myelomas. The American Journal of Epidemiology in 2004 distributed consequences of an examination by Yale University scientists that proposed that drawn out utilization of dim hair color may somewhat build the danger of creating non Hodgkin’s lymphoma however that it was anything but a decisive reason for malignant growth. The investigation called attention to that individuals who utilized hair hues before 1980 may have an expanded hazard for malignancy. Hair colors have changed since 1980 when the utilization of synthetic substances that were known to cause malignant growth in mice was dispensed with.
In 2005 Spanish scientists revealed in the Journal of the American Medical Association about a survey of 79 unique investigations from 11 nations. Their meta study reasoned that there was not solid proof of a connection between hair color and an expanded danger of disease.