FR2555442A1 - SHAMPOO TO PREVENT THE FALL OF HAIR AND PROMOTE HAIR GROWTH - Google Patents

Abstract

THE OBJECT OF THE INVENTION IS A SHAMPOO INTENDED TO PREVENT HAIR LOSS AND TO PROMOTE ITS GROWTH. ITS BASE IS A COMPOSITION OF FATTY ACID OBTAINED FROM A NATURAL VEGETABLE OIL BY PURIFICATION AND CONTAINING AT LEAST 80 LINOLEIC ACID IN THE FORM OF FREE FATTY ACID OR A SALT OR ESTER OF THE SAME.

Description

The present invention relates to a shampoo for preventing the fall of

  hair and promote hair growth without causing

scalp lesions.

  Baldness was so far attributed to various causes such as hereditary factors, certain eating habits skull condition, incorrect growth of the brain, an excess of male hormones, thinness of the scalp, etc. However, the mechanism by which these causes lead to baldness still remains to be elucidated, so that it was virtually impossible to provoke hair regrowth on a head

bald.

  A large number of conventional compositions for preventing hair loss and promoting hair growth are aqueous solutions of hinokitiol (Chamaecyparis taiwanensis oil), menthol (mint essence), pepper spray tincture (peppermint oil). Capsicum annum) or the like. The aqueous solution is applied to the scalp to ensure even blood circulation in the skin to improve blood circulation through the hair bulbs for

  to prevent hair loss and promote hair growth.

  Such compositions are formed mainly of vegetable oil components. It was therefore known that vegetable oils are useful for preventing hair loss and for promoting hair growth by ensuring uniform blood circulation in the scalp, i.e.

in hair bulbs.

  The Applicant has found that soybean oil, cottonseed oil, safflower oil and sesame oil are more effective at circulating blood regularly in the scalp than hinokitiol, menthol and tincture of cayenne pepper and thus ensure a better

  blood circulation through the hair bulbs and he discovered a

  yielded efficiency by elucidating the reason for this superiority.

  Mixed fatty acids of soybean oil, cottonseed oil, safflower oil, sesame oil, etc., among other natural vegetable oils, contain about 35 to 55% linoleic acid. It is also known that the linoleic acid content is about 77 to 78% in the case of safflower oil. Although these natural vegetable oils seem effective for hair growth, it was impossible to obtain

  a remarkable effect by their use.

  The Applicant has pursued research in this field to find an improvement and has found that it is possible to obtain using linoleic acid having a purity of at least 80%, as is or in the form, as a basis for shampooing. a salt or an ester effect far superior to that obtained by applying natural compositions

  Vegetable oils directly on the scalp.

  Linoleic acid is an unsaturated fatty acid found in large amounts in soybean oil, safflower oil,

  cotton, sesame oil, etc. and is commonly used in food

  in cosmetics, etc. It is known that this acid is not harmful to the human body, so it can be used in a shampoo to pamper hair loss and promote their growth, giving the user a sense of security. So, people will want

  to use such a shampoo to refresh and grow the hair.

  Linoleic acid is a non-conjugated unsaturated fatty acid having

  two double bonds and it is 9,12-octadecadienoic acid.

  The geometric isomers of linoleic acids include the cis-cis, cis-trans, trans-cis and trans-trans forms. Linoleic acid contained in soybean oil, safflower oil, cottonseed oil and oil

  sesame is in cis-cis form and is cis-9, cis-12octadecadieno

  than. This acid is represented by the chemical formula CH 3 (CH 2) 4 CH = CHCH 2 CH = CE (CH 2) 7 COOH and is present in the form of a glyceride in many vegetable oils such as soybean oil, safflower oil, cotton and sesame. The linoleic acid content in these fatty acid compositions

  natural is 35 to 55% in soybean oil etc. or 77 to 78% when

  that this content is high as is the case in safflower oil.

  Although such a natural composition is effective when applied to the scalp, this composition produces a remarkable effect when it contains at least 80% linoleic acid as is or in the form of a salt or an ester , whose molecular weight is low as opposed to natural oils and fats whose fatty acids are in the form of

  triglycerides of high molecular weight.

  - A high purity linoleic acid is prepared by removing the fatty acids from the mixed fatty acids (linoleic acid content: 77%) of soybean oil, safflower oil, cottonseed oil, oil sesame or the like and repeatedly purifying the resulting mixture,

  or by carrying out the method of the addition product with urea.

  The acid is in the form of a colorless oily liquid, has a melting point of -12 ° C. and a boiling point of 230 ° C., is insoluble in water, soluble in organic solvents and is susceptible to oxidation. 'oxidation

and hardening in the air.

  A shampoo is thus prepared by mixing together linoleic acid and triethanolamine in an equimolar ratio to prevent oxidation curing in air and adding a suitable amount of water to the resulting mixture. When the shampoo is used, the excess linoleic acid that has not been absorbed by the scalp is washed out and a remarkable effect is achieved without any discomfort

  the oxidation or polymerization of the unsaturated fatty acid.

  Shampoo samples are prepared to prevent hair loss and to promote hair growth and thrust

we will explain it later.

  Samples Material used Linoleic acid content 1 Rice oil fatty acids 35% Rice 2 Soybean oil fatty acids 50% 3 Safflower oil fatty acids 75% Fatty acid extract from oil 95% Safflower Each sample is prepared by mixing 249 g of purified water with 100 g of the fatty acid and 52.3 g of triethanolamine and the mixture is shaken.

  mixture at 80 C for 30 minutes in a hot water bath.

  Each sample is used for clinical trials in men aged 30 to 50 years. A 5 g portion of the sample is used for each person to shampoo once a day. We

  considers the results from a global point of view as shown below.

  Sample Effect after start of use In 1 month In 3 months In 6 months

1 AA AA

2 A A AA

3 A AA AA

4 AAA AAAA AAAAA

A: no noticeable effect.

  AA: development of some soft and fine hair and their growth.

  AAA: development of soft and fine hair and their growth in form

hard hair.

  AAAA: satisfactory hair growth.

  AAAAA: growth in overall thickness of the hair, which indicates a remarkable effect. The results above highlight the benefits of

present invention.

  Advantages of the Invention The present invention has shown that the effect previously produced by vegetable oils for hair growth can be attributed to the action of linoleic acid which improves the circulation of blood in hair bulbs, normalizes the composition fatty acids in the sebaceous gland and activates the mother cell of hair for hair growth. The invention provides an improvement of the conventional technique which

  consisted in applying to the head an oil of natural

  mainly as a triglyceride and containing about 50% linoleic acid and was unable to produce a noticeable effect. For head application or use in a shampoo, the invention provides a fatty acid composition obtained from a natural vegetable oil by purifying the oil and containing at least 80% of the oil. linoleic acid in a readily skin absorbable and low molecular weight state (as a free fatty acid or an ester with a low molecular weight alcohol or a salt with an alkali). The composition is useful for growing short hair or thin hair, for developing fine and soft hair on baldness and for

  turn this hair into hard hair of natural color.

Claims (1)

CLAIM   Shampoo for preventing hair loss and promoting hair growth, characterized in that it comprises a fatty acid composition obtained from a natural vegetable oil and containing at least 80% of linoleic acid as it is or in the form of a salt or a ester thereof.