Japanese Maple Tree Varieties. Japanese maple tree often refers to maple tree cultivars from Acer palmatum, and also may include maple trees from species Acer japonicum, and Acer shirasawanum. Acer japonicum. Acer palmatum. Acer shirasawanum. A. japonicum Aconitifolium 'Dancing Peacock'.
Vitamins that will stop hair from turning gray. Photo Credit Vitamin C image by Mykola Velychko from <a href='http://www.fotolia.com'>Fotolia.com</a>. Grey hair naturally occurs as you begin to age. The hair is made up of two parts called a shaft and a root. As you get older, the pigments in the hair begin to die, leaving fewer pigments in the hair.
Naturally occurring hydrogen peroxide can also build up in the hair, bleaching the color. Typically, white people start going gray in their mid-30s, Asians in their late 30s, and African-Americans in their mid-40s. Half of all people have a significant amount of gray hair by the time they turn 50.