There are generally four basic types of human hair used in wigs: Chinese, Indonesian, Indian and European/Caucasian. The majority of wigs are made from Asian hair. Chinese hair has a thicker denier (unit of fineness) which results in the hair being extremely straight. It is a bit more resistant to curl and can therefore be harder to style. Indonesian hair is found in greater supply and is less costly -- it can often be found in ethnic style wigs. Indian hair has thinner denier close to that of European hair but with a bit more texture. European hair is the most sought after for its fine denier but due to its increasingly limited supply in the marketplace, it is more expensive.