What can be used to neutralize a chemical straightening treatment?

Neutralizing a chemical straightening treatment is essential for stopping the chemical process and ensuring the hair is left in a stable and manageable state. A neutralizing shampoo is specifically formulated to balance the pH of the hair after a chemical treatment, effectively halting any further processing. It contains ingredients that can deactivate the chemicals used in the straightening treatment and restore the hair's natural structure.

Using a neutralizing shampoo not only helps in removing any residual chemicals but also prepares the hair for subsequent conditioning treatments. This step is vital to protect hair integrity and promote shine and softness after the manipulation of its natural state.

The other options, while they may be beneficial for different hair care needs, do not have the specific action required to neutralize a chemical straightening treatment. Hydrating conditioners and leave-in treatments mainly focus on moisturizing and nourishing the hair rather than altering its chemical state. Regular shampoos aren't formulated to address the residual chemicals from a straightening process, making them less effective in this scenario.