Kalo Hair Growth Inhibitor is a breakthrough hair retardant formula which inhibits unwanted hair re-growth. Introduced in early 1997 Kalo was the first product of its kind to be released on the market. Kalo is sold internationally, currently in over 30 countries. Every time you wax and use Kalo, you can expect that 10 to 15% of the hair will never grow back. This is because, at any given time, 10 to 15% on a person's body are in the anagen, or initial growth stage - the hair best affected by Kalo. The 85-90 per cent of the hair that does grow back will be weaker, finer, and have less colour.