The 2 types of chemical relaxers

 There are 2 types of chemical relaxers: sodium hydroxide and ammonium thioglycolate. Sodium hydroxide relaxer ( also referred to as lye relaxers.have 2% to 3%sodium hydroxide in a cream base.The ph for this type ranges from 11.5 to 14. Ammonium thglycolate relaxer contains 4% to 6% thyglycolate acid and 1% ammonium hydroxide; the ph ranges is 8.8 to 9.5 . The relaxer is appied to the roots of the hair,where it alters the hair shafts structure. Some relaxer require a protective base( petroleum jelly)be placed on the scalp prior to the procedure to prevent burning or irritation. After the relaxing phase is completed, neutralizer is applied to stop the relaxing process and balance the ph. Neutralizers,usually either hydrogen peroxide, sodium perborate,or sodium bromateal, are known as fixatives or stabilizer, These bonding agents can cause the hair to be fragile, and hair can be significantly d...amaged by excessive application of relxers. Thanks for all the supports.( hairbymzfelicia)