Croda is promoting its new UV protection hair product, ChromaVeil. Like skin, hair is susceptible to damage from overexposure to the sun. This damage affects the aesthetics of the hair and its mechanical and physical properties.
UV filters deposited on hair surface absorb the incident ultraviolet light and protect the covered hair surface from UV damage. The product from Croda provides broad spectrum UV protection for the hair from both rinse-off and leave-on systems. By protecting against UVA damage, Croda claims that ChromaVeil provides excellent protection for the hair’s colour. To measure the ability of ChromaVeil to protect the colour of dyed hair, bleached hair tresses were dyed and then treated with varying levels of control shampoos containing various UV absorbers, including ChromaVeil. After treatment, tresses were then exposed to UV irradiation under simulated sunlight using an Atlas Ci 3000+ Xenon Weather Ometer for the equivalent of one day of UV exposure. After five days of exposure, each tress (except the untreated tresses) were then treated again with the shampoo or conditioner and exposed to another five days of irradiation. This process was repeated to total 15 days of exposure. After 15 days of exposure, the L, a*, b* readings were taken of the tresses using a Hunter Lab LabScan XE Spectrocolorimeter and the total colour loss, or ?E, was calculated. The results found that after 15 days of UV exposure, the dyed tresses treated with 1.5% active ChromaVeil shampoo experienced a smaller total change in colour, providing better colour retention than the shampoo with no UV absorbers. Also conducted was a panel preference study which showed the 17 participants had a strong preference for the tresses treated with ChromaVeil products.
