Although hair follicular unit replacement systems have natural hair and they do look good, they have limitations too. Some advantages are they provide an instant solution to baldness and there is no waiting period unlike a hair transplant, where it would generally take 1 year for complete results. There are many hair systems that have 100% natural human hair and have very high esthetic outcome. They are available in various sizes, length and colour and are therefore completely customizable. There are various methods by which they can be placed on the customer’s head depending on the need. The disadvantages are, though it is an instant solution, it is not permanent. It has a life of hair system s which is ion between 6 months to 18 months depending on the method of adaptation and the hair piece. Therefore you would need another hair replacement systems thereafter. It would require periodic servicing if you use adhesive based hair restoration systems. If you belong to Grade 3 or Grade 4 degree of baldness and you are wearing a hair system continuously for over one year, you would notice traction alopecia. That is hair thinning and hair loss in the center and top portions of the scalp.