Bubble Hair
This is caused by using heating appliances such as flat irons, curlers and in some cases hair dryers. Since these appliances work at about 120-180°C if they are put on wet hair the hair will boil. Boiling water softens keratin, which is the main protein component in hair, inside the cortex which is in the middle of the hair shaft. The steam from the boiling water expands and forms tiny bubbles in the hair, so the hair becomes damaged and dry and breaks off. Bubble hair is always associated with the excessive use of heated styling appliances on damp hair.