Final answer:
To ensure a safe outcome when performing chemical texture services, rinsing the relaxer and neutralizer from the hair using warm water is essential. It removes chemicals to prevent irritation and reforms disulfide bonds to set the new hair texture. Other practices listed may not be safe or are not recommended.
Step-by-step explanation:
The safe outcome of performing chemical texture services such as perms and hair relaxing is ensured by several practices. Among the options provided, the one that helps ensure a safe outcome is to rinse the relaxer and neutralizer from the hair using warm water. This helps to remove all traces of the chemicals from the hair and scalp, avoiding potential irritation or damage that could result from chemical residue. The neutralizer, often a dilute solution of hydrogen peroxide, is used to reform disulfide bonds in their new positions, thereby setting the hair's new texture.
Using a wide-tooth comb to smooth the relaxer through the hair may be part of a typical process, but care must be taken to not apply excessive force to the scalp, which can cause irritation or damage. Alternating between hydroxide relaxers and thio relaxers is not recommended because they function differently and mixing them can lead to unpredictable and damaging results. Shampooing the hair just before applying the relaxer is also not advisable as it can strip the hair of its natural oils that protect the scalp during the chemical treatment.