Only Young, healthy human hair is handpicked and aligned uni directionally. Unidirectional alignment allows for elimination of all harsh chemical treatments that typically cause tangles and breakage: hair remains thicker, stronger and healthier. It is the smoothest, bounciest, and most lustrous hair in the market.Whereas saga has all hairs of the same strength so that it is full to the end, SAGA GOLD has combination of different lengths of hairs so that it gives a layered look and since it is not full to the end, it is also more affordable.