What happens to the humidity?
Moisture / water can get into the hair and make thin, curly hair straight and frizzy. The cause of the frizz created by moisture is the diffusion of water vapor into the hair.
Hair with high moisture absorption can occupy 15 to 20% of its own weight when compared to totally dry hair, and the absorption rate increases at higher temperatures. Hair is normally sensitive to moisture and has already been used in the first hygrometer instruments to measure relative humidity.
The inside of the hair consists of two different regions of proteins: the ortocórtex it's the paracórtex. These areas absorb water differently, so they do not swell in the same way. This differential swelling causes the hair shaft to bend or twist to one side or the other that causes frizz.
It is not possible to completely avoid the effect, but a good cream can help block the effects of water on the hair.
How can I improve this?
The key to handling highly porous hair in moisture is to use products that maintain or fix moisture.
Using emollients like coconut oil or other oils that penetrate the hair will help your hair to become more water repellent, slowing the movement of water into the hair.
Combining a finishing cream with a large amount of silicones, cationic surfactants, oils and butters, helps to seal the hair cuticle and prevents moisture loss.
The more porous or chemically treated the hair, the more moisture it can absorb. Products used for high porosity hair should contain low concentrations of humectants (ingredients that attract moisture), such as glycerin, to discourage excessive moisture absorption, especially in humid environments.
