Coloring and perming compositions for hair

A process for colouring hair, comprising the steps of

• (a) applying onto hair an aqueous composition comprising at least one alkalizing agent and a cationic polymer consisting of a copolymer of vinylpyrrolidone and vinylimidazole and a homopolymer of dimethyl dially ammonium chloride, and
• (b) after processing at a temperature in the range of 20 to 40° C. for 5 to 45 min, rising the composition off from hair.

A process for permanent shaping of hair, comprising the steps of:

• applying an aqueous composition onto shampooed and towel dried hair which is wound on curlers, the aqueous composition comprising at least one alkalizing agent and a cationic polymer consisting of a copolymer of vinylpyrrolidone and vinylimidazole and a homopolymer of dimethyl dially ammonium chloride, and at least one reducing agent, and
• after processing of 1 to 25 min at a temperature in the range of 20 to 45° C., rinsing off the aqueous composition from hair, and
• optionally treating the hair with an acidic composition and, without rinsing, a second composition comprising at least one oxidizing agent is applied onto hair and curlers are removed from hair, and hair is optionally rinsed off after processing of 1 to 15 min at room temperature.