Why are hydroxide and thio relaxers incompatible?

Hydroxide and thio relaxers are incompatible primarily because crossover between the two types can lead to significant hair damage. Both relaxers work through different chemical processes: hydroxide relaxers are strong alkaline agents that break down the hair's protein structure firmly, while thio relaxers are milder and work primarily through a different mechanism involving a reducing agent.

When both substances are used on the same hair, chemical reactions can occur that compromise the hair's integrity. The mix of these two products can create unpredictable results, often damaging the hair beyond repair, leading to breakage or severe texture alterations. This reality emphasizes the importance of using one system at a time and highlights the potential risks associated with mixing different chemical processes in hair care.

For a thorough understanding, familiarity with the chemical properties, pH levels, and heat interactions of each type of relaxer would also be beneficial, as they further explain why different techniques and formulations are needed for optimal results with each product. However, the primary concern remains the risk of damage when hydroxide and thio relaxers are used consecutively or together.