JPS609007B2 - hair styling composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composition for improving the hair itself and the ease of styling the hair.

In particular, this invention improves the hair itself and the ease of styling by treating the fiber surface with an oxidizing agent that reacts on the hair surface without diffusing much or at all into the interior of the hair fiber. Concerning compositions for improvement. Friction and other surface properties influence hair properties such as fragility and styleability or overall styleability.

Friction between hairs and friction between Z-hair and other surfaces are always undesirable, as this makes sulfurizing hair in wet conditions a difficult operation; The effect, especially the friction between the hairs, is important with regard to the ease of styling and the hair itself. In particular, these two frictional effects are directly related to the ability of the hair to hold its set and hairstyle for a considerable period of time. These frictional effects and some other factors that influence the Jo Yamawaki l of th
eSociety of CosmeticC
hemis$, VoI XW, No. 9. p. 455.
Sept. , in an article published in 1963. In this article, the authors acknowledge that chemical bleaching with peroxide and ammonia almost doubles the hair-to-hair friction properties. Additionally, U.S. Patent No. 35775
No. 28, it is recognized that hair that has been bleached chemically or by the effects of sunlight is particularly difficult to sulfur when wet. However, if these bleached hairs are treated with so-called cream rinse products,
Hair becomes limp and soft and cannot hold a set or hairstyle. Both of the above-mentioned references show the effect of bleaching the hair on the effect of friction between the hairs and the effect of these frictional effects on the ease of styling the hair to keep it set. Bleaching affects hair
Although it has been found to improve the hair's ease of styling with respect to set retention, it takes advantage of the inherent increase in the friability of the hair due to treatment with oxidizing agents, while at the same time the hair color is essentially No product or method for hair treatment is available that is completely free of effects.

The methods in the above-mentioned prior art for increasing the frictional effect of the hair and thereby influencing the styleability and retention of the hair include those that bleach or lighten the color of the hair;
That is, through the use of appropriate peroxide-ammonium hydroxide or photomonoxide bleaching processes. Previous attempts to produce products that improve the hair itself and its ease of styling without bleaching or oxidizing the hair to change its color have not been completely successful.

This is because the hair itself and the resins that promote styleability are removed by shampooing and must be replenished or reprocessed each time the hair is shampooed. However, it has been found that by utilizing the compositions of the invention, durable improvements can be made to the hair itself and to its ease of styling without causing significant changes in the color of the hair.

In summary, the present invention comprises an aqueous solution of dipersophthalic acid from about 0.1 to about 1% by weight, the aromatic peracid oxidizing agent being maximally reactive at the hair surface; This provides increased hair integrity and ease of styling, while diffusion into the hair is kept to a minimum to avoid substantial color changes.

Therefore, it is a first object of the present invention to provide a composition for "permanently" improving the hair itself and the ease of styling the hair without causing a color change.

Further objects and improvements of the method and composition of the present invention will become more apparent from the detailed description below.

The method of the invention comprises preparing an effective amount of about 0.1 to about 1% by weight aqueous solution of diperisophthalic acid having a pH of 8 to 11.
It consists of applying to the hair for a period of time.

The compositions of this invention consist of an aqueous solution of an aromatic peracid oxidizer at a weight percent of about 0.1 to about 1, the solution having a pH of 8 to 1.
It is 1.

We do not wish to limit ourselves to any particular theory or mechanism as to why the compositions and methods of this invention effectively improve the hair itself and its ease of styling while minimizing color changes. Although not, the following seems to explain this.

The oxidizing agent used in the compositions and methods of this invention is a peroxyaromatic oxidizing agent and is large enough that most of the oxidizing agent's effect occurs on the surface of the hair fiber itself, resulting in hair pigmentation and color. The diffusion of oxidizing agent into the interior of the hair, where it is present, appears to be minimized. Because it reacts only on the surface of the hair fiber and does not react with the central pigment part of the hair,
The desired friction properties provided by oxidative treatment of hair are obtained without substantial changes in the color of the hair fibers themselves. The compositions of this invention consist of an aqueous solution of the aromatic peracid oxidizer described above at a concentration of about 0.1 to about 1% by weight.

In this 0°C concentration range, the oxidizing activity of the peracid compound primarily affects the surface of the hair fiber, and there appears to be little or no diffusion of the oxidant into the interior of the hair, where the pigment of the hair fiber is present. . However, within the above-mentioned range, it has been found that solutions with an oxidizing agent concentration of 1 to 6 ta% are preferred. Within this preferred range, the maximum roughening effect of the hair occurs with ease of styling and an increase in the hair itself, and at this time the aromatic peracid is destroyed and the hair color changes. The possibility of 0 hydrogen peroxide causing oxidation is minimal.

The treatment time according to the method of the invention can be varied somewhat depending on the desired effect.

In other words, if the hair to be treated has some natural hair and ease of styling, then the treatment time will not need to be as long as for completely supple and difficult to manage hair. In general, treatment times of up to 1 hour can achieve the desired effect of increasing styleability by roughening the fiber surface while minimizing diffusion into the hair core that can cause color changes. Okay, so depending on the concentration of the aromatic oxidant used, the treatment time can be varied, i.e. within the preferred concentration range mentioned above, the more concentrated the solution, the shorter the treatment time required. about 15
It has been found that optimal effects can be obtained within the range of ~40 minutes. In addition, the processing time depends on many other parameters,
That is, it will vary depending on the previous treatment circumstances of the hair to be treated and the general nature and feel of the individual's hair. A third parameter that will vary significantly depending on the individual to be treated and the previous treatment circumstances of the hair and other natural properties of the hair is the solution to hair ratio.

It has been found that generally satisfactory results are obtained with a solution to hair ratio of about 25:1 to about 1:1 by weight. Within the above weight ratio ranges, it has been found that best results generally occur with a solution to hair ratio of about 10:1 to about 1:1. The temperature at which the composition of the invention is applied to the hair is not particularly important, since the method of treating the hair is not particularly temperature related. However, high drying temperatures should be avoided immediately after treatment with the aromatic peracid solution and before rinsing is complete. This is because at these high temperatures peracids tend to decompose into Z-hydrogen peroxide, which affects hair color. For this reason, if the hair has to be dried and set following treatment with the compositions of the invention, it is important to rinse the hair thoroughly to prevent decomposition into hydrogen peroxide from drying or other heat treatments. It is preferable to remove the peracid to prevent it from being damaged. It is also preferable to apply the composition of the present invention to previously washed hair; however, in order to effectively improve the hair itself and the ease of styling by the method of the present invention, this first washing treatment is necessary. is not necessary. Oxidative treatments to improve the styleability and the hair itself can be carried out in a single treatment with a high solution-to-hair ratio or in a series of consecutive treatments with a low solution-to-hair ratio. Good too.

Both of these methods give satisfactory results.
Since treatments are related to many parameters, the nature of the individual's hair to be treated must first be determined before deciding whether to use a single concentrated treatment or a series of less concentrated treatments. It must be. Whether a single process or a series of processes is used, the end result is essentially the same in both cases. The compositions of this invention are illustrated by the following examples, which should not be considered as limiting the invention.

All parts, percentages and proportions given in the following examples are by weight and all temperatures are in degrees Celsius. EXAMPLE 1-7 Hair tresses were shampooed, rinsed with water and dried.

The pHIO was then adjusted with ammonium hydroxide and each tress was treated with an aqueous diperisophthalic acid solution as shown in Table 1 below for 30 minutes at a solution to hair ratio of 25:1. Following this treatment, each tress was rinsed with water, set and dried. Table 1 Example Concentration (wt%) 1
1・〇2
1.03
204
305 406
507
1○-〇 Each of the above locks undergoes no substantial color change, and the hair itself and ease of styling are improved as indicated by hair flow and curl retention.

Examples 8-14 Examples 1-7 were repeated except that the hair tresses were treated three times with a solution to hair ratio of 2.5:1.

After the first treatment there was some improvement, but after the twentieth and third treatments substantially the same improvement as in Examples 1-7 was observed. Shampoo each panelist's hair twice, rinse it, and leave it at room temperature for about 1 minute, about 2% by weight of 100%
After treatment with an aqueous solution of di-soperphthalic acid, rinsing and drying, the hair was examined to evaluate the results.

After completing the series of treatments, the treated hair was examined periodically for approximately one year. In the case of panelist A (56g), the test was performed once a week for IQ weeks, for a total of 10 times, and the test continued to be zero thereafter (processing date: June 26, 1972).
Sunday, July 3rd, 10th, 17th, 24th, 31st, August 7th, 14th, 21st, 28th; Inspection only: September 4th, 11th, 18th, 1971; 25th, October 2nd, 9th, 16th, 23rd, November 27th, December 20th, Showa 4 Gunno January 24th, February 265th, April 30th, July 9th
Day).

In the case of Panelist B (53 years old), the treatment was carried out once every week for 8 weeks, for a total of 8 times, and the test was continued thereafter (treatment dates: June 26, 1970, July 3, and 10). , 17
Sunday, 24th, 31st, August 7th, 14th; 0 tests only:
August 21st, 28th, September 4th, 11th, 1971
8th, 25th, October 2nd, 9th, 16th, 23rd, 1st
January 27th, December 20th, 4&King January 24th, February 2nd
2nd, March 1st, April 30th, July 9th).

The following conclusions were obtained.

{11 No undesirable discoloration or damage to the hair occurred.

'21 improvements in hair styling were noted to persist for 6-8 weeks after final treatment.

This sustainability is evaluated as extremely outstanding when considering hair growth, daily brushing and hair styling operations, etc.
Perisophthalic acid is difficult to handle safely in its 100% active form, so it is preferred to formulate solutions thereof using diluted or encapsulated forms of the peracid compound. An example of this is a composition comprising dipersophthalic acid (25%) coated with magnesium sulfate (75%). Additionally, the compositions included in this invention may contain other conditioning agents, resins, fungicides, surfactants, hair dyes and pigments, anti-dandruff agents, opacifiers, UV absorbers, brighteners, sequestering agents, and others. It is also possible to contain other adducts, such as analogs, which are not adversely affected by the peracid compound.

Although the processes and compositions of the invention have been described in the foregoing examples and specification, the invention is not to be limited thereto, but only as defined in the claims.

Claims (1)

[Claims] 1 pH is 8 to 11, and about 0.0% of diperisophthalic acid.
A composition for improving the hair itself and the ease of styling the hair, consisting of a 1 to about 10% aqueous solution.