Human hair gets its characteristics from the nativity of the owner. Based on the nativity, the body produces particular quantity and type of sebum to deal with the environmental factors particular to specific geographical climes. It is this sebum which defines the hair type and texture. The color depends on genetic and other factors. Apart from these natural and congenital factors, the human hair is also influenced by heat and chemical treatments it undergoes during its lifetime. The innate features of the human hair transfer themselves onto the human hair extensions made from such hair. When you select human hair extensions, you have to see which of the human hair extensions match your specific hair type. Your hair type dictates not just the selection of the human hair extensions best suited for your looks, but also their further treatment and hair care regimen. If you possess straight hair, then you can opt for human hair extensions with straight or a slightly wavy texture. For extra waviness, you will first have to perm your natural hair and then use the wavy human hair extensions. Curly human hair extensions will not suit you at all. An example of the hair type determining the treatment is if your natural hair is curly. It will have to be trimmed to a perfectly matched length before wearing the human hair extensions. An example of the grooming regimen – if your natural hair is frizzy, it has to be combed using a brush with wide teeth. For better setting, the hair and the human hair extensions will have to be styled when slightly wet or damp.