VIA Semi-Permanent Hair Colour Via Natural Hair Colour is loaded with hair nutrients, and built-in C&H UV proteins for your colour and protection against sunlight and environmental pollutant for your hair-colour lasts longer and hair is stronger. Your hair is in better condition after using Via Natural Hair Colour which is so gentle, it can be used immediately after a relaxer. The professional conditioning formula rejuvenates as it colours, leaving the hair silky with shiny, vibrant and long lasting colour. Your Hair... Your Colour Via Natural Semi-Permanent Hair Colour.