Methods for treating chemically relaxed hair

A method for treating chemically relaxed hair comprising:

• A. applying a neutralizing composition to hair within 24 hours after a lanthionizing chemical relaxer composition has been rinsed from the hair, the neutralizing composition comprising:
• a. at least 0.5 wt. % of at least one carboxylic acid selected from the group consisting of maleic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, citric acid, glycolic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, sebacic acid, benzoic acid, glyoxylic acid monohydrate, a salt thereof, and a mixture thereof;
• b. one or more C2-C6 monoalkanolamines;
• and
• c. water;
• B. allowing the neutralizing composition to remain on the hair for about 10 seconds to about 30 minutes;
• C. after allowing the neutralizing composition to remain on the hair for about 10 seconds to about 30 minutes, without rinsing the neutralizing composition from the hair, applying a neutralizing conditioner, the neutralizing conditioner comprising:
• i. at least 0.5 wt. % of at least one carboxylic acid selected from the group consisting of maleic acid, oxalic acid, malonic acid, malic acid, glutaric acid, citraconic acid, citric acid, glycolic acid, succinic acid, adipic acid, tartaric acid, fumaric acid, sebacic acid, benzoic acid, glyoxylic acid monohydrate, and a mixture thereof;
• ii. one or more C2-C6 monoalkanolamines;
• iii. one or more cationic surfactants;
• and
• iv. water;
• D. allowing the neutralizing conditioner to remain on the hair for about 5 minutes to about 30 minutes;
• and
• E. rinsing the neutralizing conditioner and the neutralizing composition from the hair.