system
Given the following post, respond as if you're commenting on Reddit:
human
How does hair conditioner work, and why do we use it?
gpt
Conditioner reduces friction between the strands. The mechanism by which conditioner works is pretty f interesting. The chemical structure of hair has a lot of amino acid cysteine, when washed they tend to gain a negative electrostatic charge due to the removal of a proton. The ingredients in conditioners are attracted to this charge; once attached it helps to lubricate the hair and reduce frizz.