Which chemical acts as a neutralizer in a permanent wave?

Which chemical acts as a neutralizer in a permanent wave?

• A. Hydrogen Peroxide
• B. Sodium Bromate
• C. Both Hydrogen Peroxide And Sodium Bromate
• D. Ammonium Thioglycolate

Answer: (C)

In a permanent wave, after the reducing agent breaks the disulfide bonds, the neutralizer’s job is to re-oxidize and rebuild those bonds so the new shape is locked in. Hydrogen peroxide is the classic oxidizing neutralizer that does this by reforming disulfide bonds. Sodium bromate can also act as an oxidizing neutralizer in some perm formulations, performing the same function of restoring bonds and setting the curl. Ammonium thioglycolate is the reducing agent that breaks the bonds earlier in the process, not the neutralizer, so it isn’t the correct choice here.

In a permanent wave, after the reducing agent breaks the disulfide bonds, the neutralizer’s job is to re-oxidize and rebuild those bonds so the new shape is locked in. Hydrogen peroxide is the classic oxidizing neutralizer that does this by reforming disulfide bonds. Sodium bromate can also act as an oxidizing neutralizer in some perm formulations, performing the same function of restoring bonds and setting the curl. Ammonium thioglycolate is the reducing agent that breaks the bonds earlier in the process, not the neutralizer, so it isn’t the correct choice here.