Chemical depilatories remove unwanted hair by:

Chemical depilatories are formulated specifically to dissolve unwanted hair. They contain active ingredients, often based on strong alkaline substances or thioglycolic acid, which break down the protein structure of the hair. This process effectively weakens the hair's keratin, causing it to break down and be easily wiped or washed away from the skin's surface.

The other options imply processes that do not accurately describe how chemical depilatories function. For instance, burning suggests a method that involves high heat which is not characteristic of chemical depilation. Shrinking might imply a physical alteration of the hair without loss, which does not align with the mechanism of action of chemical depilatories. Turning hair to liquid implies a thorough liquefaction, which is more extreme than what these products do; rather, they soften or dissolve the hair for removal. The focus of chemical depilatories remains on the dissolution of hair rather than physical alteration or destruction through burning or liquefaction.