Hair is made up of hydrogen bonds. These can only be broken or restructured by heat or moisture. If a person with curly hair uses a flat iron they are restructuring the curl pattern (the hydrogen bonds) in effect straightening their hair. Humidity will break down those hydrogen bonds again returning the hair to it's original curl pattern. This is why when a stylist sets a persons hair, they use heat to break down the hydrogen bonds but there is always a bit of cool hair at the end to "set" that new pattern.
Make your hair fall and frizzy
humidity.
curly hair reacts to humidity horribly! It decreases your volume and your hair will be moist and gross!
Well, it is because if you have dry hair, it just wants to absorb water. so that makes it frizzy or curly.
Humidity. .... or, Because when it's humid, your hair absorbs the moisture and gets frizzy.
I can answer the first part...What makes your straight hair curly is severl things one sleping on it or with your hair in a bun or ponytail. Second water can make you hair curly again or steam.. :)
Humidity can cause curly hair to go straight. Flat irons and different hair products can also cause this to happen.
straight hair makes the curly lesss curly makes wavy
If you have a flat shaft then then you have curly hair. If you have straight hair you have an oval shaft. It always depends on what type of shaft you have. It also depends if you have wavy hair or not.
Doesn't a curling iron do that?
No it just makes your hair curly.
The shape of the hole that hair comes out of.
no not really unless you get volumizing shampoo but that makes it more puffy hope this helps