Lithium hydroxide relaxers and potassium hydroxide relaxers are often marketed as what type of relaxers?

Lithium hydroxide and potassium hydroxide relaxers are often categorized as no-lye relaxers due to the absence of sodium hydroxide, which is found in traditional lye relaxers. These formulations are favored by some professionals and clients because they tend to be milder on the scalp and may cause less irritation compared to lye relaxers.

No-lye relaxers, including those based on lithium or potassium hydroxide, work by breaking the disulfide bonds in the hair, allowing it to be reshaped and relaxed. Additionally, they tend to have a creamier consistency, making them easier to apply and control during the relaxing process. This characteristic can be particularly beneficial for certain hair types, as it allows for more precise application while minimizing potential scalp sensitivity.

The terminology used in the other options like dual-lye and sodium-based can lead to confusion, as these refer to different formulations or characteristics unrelated to the classification of lithium and potassium hydroxide relaxers. Understanding the distinctions between these types helps professionals choose the most suitable relaxer for their clients' specific needs and hair types.