###Human: Kindly tell me the treatment for frizzy chemically treated hair with hair fall. ###Assistant: Hi. Chemical treatment is a common cause of hair brittleness as it breaks disulfide bonds that gives strength to hair. This would take some weeks time to resolve. I suggest you take an oral Biotin supplement like tablet Revilus once a day for six months. In addition, I suggest you use a serum Q-sera serum. Use it on scalp skin, twice daily. Take care.