Final answer:
No-lye relaxers, like those with calcium hydroxide, are marketed as a gentler alternative to traditional lye-containing hair relaxers. They are popular among people with sensitive scalps, although they still carry potential risks of hair damage and should be used carefully.
Step-by-step explanation:
Calcium hydroxide relaxers are often advertised and sold as no-lye relaxers. Traditional hair relaxers frequently use sodium hydroxide, which can be quite harsh on the scalp and hair. No-lye relaxers, on the other hand, typically use calcium hydroxide and guanidine carbonate, and are often chosen because they are considered less damaging and gentler. They are preferred by individuals with sensitive scalps or those who are looking for a less aggressive hair straightening process. However, it's essential to note that no-lye relaxers still have their own set of potential risks and should be used with caution. Proper application and following the manufacturer's instructions are crucial to minimize hair damage and scalp irritation.