Gray hair has been increasing here and there, after the color is gradually tend to be reddish. The manufacturer of the 3 series, 4 series, 5 series, 6 series (number rises as the color will be bright) spent. Friendly minute to skin, color-filled is not dyed in the weak Beta' and uniformity. Black is to be avoided, should also avoid becoming reddish, inconspicuous difference of white hair and black hair, color staying power of ... would like to look at in a comprehensive manner, such as, the best close was was the 4G. Not so much brighter now, but it is orange brown.