how to test european human hair and chinese human hair ?

There are several ways to test if hair is human hair and whether it is from Europe or China. Here are some of the most common methods:

1. Burn Test: Human hair will have a white ash residue when burned, while synthetic hair will melt and become black. European hair is typically finer and lighter than Chinese hair, so you may also notice a difference in the texture and color of the ash.

2. Stretch Test: Human hair has elasticity and can be stretched, while synthetic hair will break or not stretch at all. European hair typically has more elasticity than Chinese hair.

3. Cuticle Test: Human hair has a natural cuticle layer that lays in the same direction, while synthetic hair has a rough texture with the cuticles going in different directions. European hair typically has a smoother cuticle layer than Chinese hair.

4. Inspection: You can inspect the hair for any obvious signs of non-human hair such as a uniform texture, lack of natural luster, and an absence of grey hairs.

Keep in mind, these tests are not foolproof and there is some variation within each type of hair. It is also possible to process and treat the hair to change its appearance, so it is important to use a combination of tests to determine the authenticity and origin of the hair.