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EP-3723716-B1 - KIT FOR PREPARING A BODY TREATMENT PRODUCT

EP3723716B1EP 3723716 B1EP3723716 B1EP 3723716B1EP-3723716-B1

Inventors

  • SCHROEDER, THOMAS
  • SCHEELE, SOEREN
  • METTE, Manuela

Dates

Publication Date
20260513
Application Date
20181112

Claims (9)

  1. A kit comprising at least four structurally viscous base liquids for the preparation of a body treatment agent, wherein each base liquid contains at least 10% by weight of a surfactant mixture consisting of anionic surfactants, amphoteric surfactants, and nonionic surfactants.
  2. A kit according to claim 1, characterized in that each base liquid contains at least 10% by weight of a surfactant mixture consisting of alkyl ether sulfates, alkylamidoalkyl betaines, and alkamide monoethanolamines.
  3. A kit according to claim 1 or 2, characterized in that the amount of alkyl ether sulfates is 7 to 15% by weight, the amount of alkylamidoalkyl betaines is 1.5 to 4% by weight, and the amount of alkamide monoethanolamines is 1 to 2% by weight, in each case based on the total amount of base liquid.
  4. A kit according to any of the preceding claims, characterized in that the surfactant mixture contains sodium lauryl ether sulfate (INCI: Sodium Laureth Sulfate), cocamidopropyl betaine (INCI: Cocamidopropyl Betaine), and N-(hydroxyethyl)cocoyl amide (INCI: Cocamide Monoethanolamine).
  5. A kit according to any of the preceding claims, characterized in that at least one base liquid further contains a substance selected from dialkyl sulfosuccinates.
  6. A kit according to claim 5, characterized in that the substance is sodium dioctyl sulfosuccinate (INCI: Diethylhexyl Sodium Sulfosuccinate).
  7. A kit according to any of the preceding claims, characterized in that at least one base liquid further comprises a substance with the INCI designation "Guar Hydroxypropyltrimonium Chloride," which has a nitrogen content of 1.9 to 2.4% and/or a number-average molecular weight in the range of 15,000 to 25,000 daltons.
  8. A kit according to any of the preceding claims, characterized in that it comprises at least 8 and, most preferably, at least 10 base liquids.
  9. A kit according to any of the preceding claims, characterized in that the base liquids have a viscosity of ≥ 5,000 mPas (Brookfield DV 2+, spindle 5, 20 rpm, 20°C, and 60 seconds).

Description

The invention relates to a kit for producing a body treatment product, in particular a hair treatment product, and a mixing device for producing a liquid mixture, comprising such a kit as defined in the claims. In many areas of daily life, there is a continuing trend toward personalized programs that address the individual needs and requirements of a customer or user. This is the case, for example, in the fields of nutrition and healthcare, as well as in personalized cosmetics. This allows consumers or users of cosmetic treatments to receive individualized treatment instructions and products specifically tailored to their individual needs, such as those of their hair or skin, and consequently achieve a particularly high degree of effectiveness. A hairdresser can use their experience and/or suitable analytical equipment to determine a client's current hair condition (damaged, dull, brittle, etc.). They then typically use products available in the salon to select the appropriate hair treatment. Conventional, commercially available hair treatment products are offered as a limited product range for a specific application. For example, every manufacturer of shampoos, hair conditioners, or hair dyes provides a limited range of products. Even if a user's hair condition is known, it may therefore be impossible to achieve optimal treatment results; at best, a result close to the desired outcome can usually be achieved. See, for example... EP 0 468 703 A1 (UNILEVER PLC [GB]; UNILEVER NV [NL]) January 29, 1992 (1992-01-29 ) and US 2002/194021 A1 (MATSUMOTO MITSUO [JP] ET AL) December 19, 2002 (2002-12-19 ), or EP 1 516 613 A1 (BEIERSDORF AG [DE]) March 23, 2005 (2005-03-23 ). It is therefore desirable to produce a cosmetic hair treatment product tailored to the individual hair condition of the user on site, for example in a hair salon or at a point of sale, based on the determined hair condition. Manually mixing different hair treatment products, such as components for shampoo, conditioner, hair mask, or hair dye, is challenging for both hairdressers and users. Optimal mixing results can only be achieved if the individual components are mixed precisely in their predefined ratios. For example, when manually mixing multiple components from bottles, an excessive amount of one component may remain in the bottle, resulting in a deficiency of that component in the final mixture. With the aid of a mixing device comprising a plurality of storage containers with viscous liquids containing ingredients of body treatment products, a plurality of pumps For conveying the viscous liquids and a static mixer, it is possible to produce a desired body treatment product precisely and easily by mixing at least two liquids. The liquids in the storage containers must meet numerous requirements: they must be easily miscible, pumpable precisely and efficiently, and have a stable storage life. Furthermore, they should be able to contain high concentrations of active ingredients and/or excipients, such as oils and perfumes, so that even small quantities of the desired hair treatment product, for example for a single application, can be produced. Consequently, there is a demand for a kit comprising a plurality of liquids containing ingredients for body treatment products, which, when used in a mixing device, enables the standardized and objective production of an individual body treatment product, in particular a hair treatment product, for a user. This problem is solved by a kit comprising at least four shear-thinning base liquids for the manufacture of a body treatment agent, each base liquid containing at least 10 wt% of a surfactant mixture consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants. It is particularly preferred that each base liquid contains at least 10 wt% of a surfactant mixture consisting of alkyl ether sulfates, alkylamidoalkyl betaines and alkamide monoethanolamines. Surprisingly, it has been shown that base liquids containing this surfactant mixture are very miscible. Furthermore, a wide variety of ingredients in body treatment products are compatible with these surfactants and can be stably incorporated into the base liquids. Preferred alkyl ether sulfates are selected from the group consisting of C4 to C24 , preferably C6 to C18 , and particularly preferably C8 to C14 alkyl ether sulfates. The alkyl groups can be linear or branched, with linear groups being preferred. The addition of an alkyl or alkenyl group with the suffix "eth" generally describes the addition of one or more ethylene oxide units. The number of ethylene oxide units is indicated by adding a whole number. Particularly preferred alkyl ether sulfates have a C 12 alkyl group (lauryl group) and include ammonium laureth sulfate, ammonium laureth-5 sulfate, ammonium laureth-7 sulfate, ammonium laureth-9 sulfate, ammonium laureth-12 sulfate, DEA-laureth sulfate, magnesium laureth sulfate, magnesium laureth-5 sulfate, magnesium Laure