Low porosity, high porosity... Need you to bring light into my brain-darkness again.

[Wusel]

Yesterday, I've read on Wikihow how to determine your hair type.
And now I know that my hair is strong (snaps only when I stretch it to double size) and has LOW porosity.
It dries EXTREMELY fast after washing and I can braid or bun it 20 minutes after washing and detangling.
And my hairs NEVER sink.
Is this something bad?
Does it mean that all the moisture (oils, creams and conditioners) I put on it doesn't penetrate it?
Is it better for your hair-health when you have high porosity because everything penetrates your hair?
Does hair with low porosity tangle more or less when it's really long?
Is it more or less prone to splitting and breaking?
Do I need a different conditioner because I'm low porosity?
I thought I'm high porosity because my hair is rather dry and sometimes crunchy... But this has nothing to do with porosity I suppose...?
Need. Help. Again. :google:didn't help...

[Silverbleed]

So far I understood low porosity hair (that doesn't sink indeed) is considered the healthiest type of hair. And yeah it's difficult to moisturize that hair because it doesn't absorb that well since the cuticle are closed/compact.

High porosity isn't that good either because it doesn't hold moisture at all and whatever you feed it can be gone in an instant. I've experienced this on my bleached hair and I rather cut it off than kept it. So I cut it all off xD I just couldn't figure it out how to work with it, probably also because of the damage.

Your hair may be crunchy because low porosity shouldn't get too much protein. That could make your hair brittle.
This is a quote from the naturally curly site; "Low porosity hair is also prone to build-up from protein-rich deep conditioning products, which can leave it feeling stiff and straw-like. Stick to protein-free, daily conditioners with humectants such as glycerin or honey. Use moderate heat with protein-free deep conditioning treatments to help open up the tightly bound cuticle."
My English isn't that good so I find it hard to explain lol.

And about tangling, since the hairs that are low porosity are compact together while the hairs from someone with high porosity are basically standing up, the last type can have too much friction causing more tangles. I think in theory low porosity should be the most manageable.

This is what I've read the past months, and if I'm wrong somebody please correct me c:

[Stormynights]

My hair takes over a full day to dry during the winter. I can sit in the sun or in front of a fan in the summer and I can dry it faster but not fast. It is very porous. Water will just roll off non porous hair or hair with a tight cuticle like water over a ducks back. Non porous hair doesn't take color very well because the cuticle is just too tight to let the color absorb. There can be fine to course hair that is either porous or no porous. All types are so different and have their own advantages or disadvantages.

[lapushka]

If you've ever had permanent hair color stick to your hair, or a perm, your hair isn't low porosity. If it is, those chemical services just won't work or last.

I would gamble it's medium porosity and perfectly normal.

[Arctic]

The floating test isn't a trustworthy one.The other test they showed; no idea if that is either, I have never heard of it before.

Porosity is a bit difficult to test at home. Scienc-y Hair Blog has good articles about different porosities.