Apart from hiding deficiencies in the natural hair and scalp, and adding length, density, shine and style to your hair style, human hair extensions can also be used on an experimental basis to find out which hair style suits your best. While there are computer software applications which can give air-brushed pictures of your looks in different hair styles, a picture may not be able to give the complete impression. The actual look when wearing a new style may not match the picture due to even minor differences in the hair texture, shade, density or pattern. If you want to exactly replicate the impact of a certain hair style, it is best to wear human hair extensions of that style for a few days in order to gauge its effect. The human hair extensions can also be used to actually see the effectiveness of alternate hair styles and their impact on the general appearance. This can be used to select the hair style which best suits your appearance. By wearing human hair extensions, the client can also see how the new hair style matches up to different moods and environs. Human hair extensions made from real human hair act and behave in the exact same way as natural hair and are, therefore, a good reflection of what the natural hair would look like. Further, the impact of your lifestyle on the natural hair can also be judged, since human hair extensions can be subjected to your daily living conditions to see their impact on the hair style being experimented with.