Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/10—Preparations for permanently dyeing the hair

Definitions

• the invention relates to a process for the oxidative dyeing of human or animal hair, in which a hair dye is prepared from at least one oxidation dye and an oxidizing agent immediately before use, applied to the hair to be dyed and a predetermined period of time is applied, after which the hair dye is washed out is, as well as a hair dye for performing the method.
• alkaline oxidizing dyes in paste form are used, which are mixed with an acidic oxidizing agent, e.g. Hydrogen peroxide, ready-to-use, to be applied to the hair to be colored
• an acidic oxidizing agent e.g. Hydrogen peroxide, ready-to-use
• Hair dye preparation can be mixed.
• the coloring is created; here by reaction of certain developer substances with certain coupler substances in the presence of a suitable oxidizing agent.
• the ready-to-use preparation is clearly in the alkaline range, as a result of which the surfaces of the hair to be colored are disrupted in a manner which is advantageous for the penetration of the oxidation dyes.
• alkaline preparations also stress the hair, so that damage to the hair can occur, in particular in the case of repeated effects, for example in the case of repeated dyeing.
• the invention is based on the object of specifying a process for the oxidative dyeing of hair and the hair dye required for this which, even when used repeatedly, do not lead to the described hair damage.
• this object is achieved according to the invention in that a hair colorant which has been prepared from oxidizing dye and oxidizing agent with the use of manganese dioxide in powdery consistency and is adjusted to an acidic pH value in the range from 5.9 to 6.9 is used becomes. It has been shown that when using such a weakly acidic hair dye in the presence of manganese dioxide, extremely durable dyeings of human hair in brilliant shades are possible, provided that darker hair is not to be recolored to a lighter shade.
• the coloring effect which was successful compared to the previous experiments with acidic hair dye, is attributed to the catalytic effect of the manganese dioxide contained in the hair dye. Furthermore, it was found that the hair damage attributable to the alkaline setting of the hair colorants used hitherto was completely avoided.
• Such damage can usually be avoided if recolouring occurs several times if the process of recolouring light-colored hair, which is darker in its natural state, is carried out in such a way that a known length is first applied to the darker regrown hairs close to the scalp alkaline hair dye, but the weakly acidic hair dye is applied to the previously colored subsequent hair lengths, and that both the alkaline and the weakly acid hair dye are washed out of the treated hair after a sufficient exposure time.
• a combined permanent wave and hair dye treatment is particularly problematic with regard to hair damage.
• the risk of hair damage is significantly reduced in a method for waving and oxidative dyeing of hair, in which a permanent wave preparation is first applied to the washed hair and wound on curlers for a predetermined period of time and then washed out, whereupon the hair still wound up with a liquid oxidizing fixative is prefixed and finally the Haax freed from the curlers is fixed in a further treatment step with an oxidizing fixative, in that the weakly acidic hair dye is used for the fixation, for the time required for sufficient coloring of the hair on the hair Brought into action and then washed out.
• the hair dye thus replaces the fixing agent usually used for permanent waving during post-fixing, ie it is used in a double function, so to speak, whereby the damage to be feared otherwise when using alkaline hair dye is avoided.
• the hair dye used in the process according to the invention prepared before application from an oxidizing dye and a - usually liquid - oxidizing agent, can be prepared in such a way that the manganese dioxide powder is mixed with the oxidizing dye before the addition of the oxidizing agent.
• the manganese dioxide powder can be added during the preparation of the hair dye at the same time as or immediately after the oxidation dye has been mixed with the oxidizing agent.
• the addition of manganese dioxide powder to the hair colorant in such an amount has proven to be optimally effective that it is contained in the hair colorant in a proportion between 0.02 and 5% by weight, preferably between 0.12 and 0.18% by weight .
• the preparation used in carrying out the process according to the invention immediately before use by mixing an oxidizing dye with an oxidizing agent is thus characterized in that it is adjusted to a pH value between 5.9 and 6.9 and additionally finely divided powdery manganese dioxide contains.
• the amount of manganese dioxide is preferably such that it is present in the hair dye in proportions between 0.02 and 5% by weight, preferably between 0.12 and 0.18% by weight.
• Example 1a The amount of manganese dioxide is preferably such that it is present in the hair dye in proportions between 0.02 and 5% by weight, preferably between 0.12 and 0.18% by weight.
• Color intensity can be reduced to 5 minutes.
• the agent was applied to medium-strength hair with a medium ash blonde and left to act for 20 minutes.
• a permanent wave was carried out on medium-strong hair, which had a basic shade of dark golden blonde and whose hair lengths and tips were faded.
• the perm was processed up to and including the first fixation on the winder according to the instructions for use.
• Cetylstearyl alcohol 10.0 g coconut fatty acid monoethanolamide 2.0 g stearic acid monoethanolamide 2.0 g stearic acid diethanolamide 1.0 g
• the perm was processed up to and including the first fixation on the winder according to the instructions for use.
• the resulting hair dye with a pH of 6.7 was then applied to the hair using an application bottle or a sponge and allowed to act for 10 minutes.
• the hair was recolored to a strong red shade.
• the exposure time can be varied between 5 and 2 minutes.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Birds (AREA)
• Inorganic Chemistry (AREA)
• Epidemiology (AREA)
• Chemical & Material Sciences (AREA)
• Cosmetics (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)
• Welding Or Cutting Using Electron Beams (AREA)
• Laminated Bodies (AREA)
• Winding Of Webs (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6279260

Family Applications (1)

Country Status (5)

Cited By (5)

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• 1985
  • 1985-08-24 DE DE19853530270 patent/DE3530270A1/de active Granted
• 1986
  • 1986-08-07 WO PCT/EP1986/000466 patent/WO1987001033A2/de active IP Right Grant
  • 1986-08-07 US US07/051,687 patent/US4776856A/en not_active Expired - Lifetime
  • 1986-08-07 JP JP61504730A patent/JPS63501012A/ja active Granted
  • 1986-08-07 EP EP86905258A patent/EP0235217B2/de not_active Expired - Lifetime

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