If you recognize the type of hair you have it will help you understand how you should hydrate, nourish, and take care of it the best way possible.
Knowing your hair porosity, hair density, and hair type will help you understand and how to properly take care of it. Stop wasting time and money on products that don't do anything to your hair.
This is how your hair is able to absorb and hold moisture. It's affected by the outer layer of your hair molecule that is called the cuticle which would determine how easily moisture can pass in and out of your hair.
The Floating Test
Take a couple of strands of your hair from a comb or a brush and drop it into a cup or a bowl of water, and let it sit. A few minutes later you can see where it is, if your hair floats, you have low porosity hair. If your hair sinks, you have high porosity hair. And if your hair stays in the middle you have medium porosity.
1) Low porosity
Hair has tightly bound cuticle layers with overlapping scales that lay flat. This hair type is usually considered healthy and it is often shiny.
2) Medium porosity
Hair requires the least amount of maintenance. The cuticle layer is looser than low porosity allowing just the right amount of moisture to get into the hair while forbidding too much from escaping.
3) High porosity
Hair is highly porous, so while it will absorb oils it may not retain moisture that well.
Hair density refers to how closely those strands are packed together on your hair.
Try with your dry hair: if you can see your scalp very easily, then you have low-density hair.
If you can see some of your scalp, you have medium density hair. If your scalp is difficult to see, then you have high-density hair.
Smooth out your hair as much as possible with a comb or your fingers, and then gather and tie it into a ponytail. Low-density hair will be less than two inches, medium density hair will be two to three inches and thick hair will be four or more inches.
This refers to the thickness of the individual strand on your hair rather than how much hair you have on your head.