CN-121987531-A - Nanoparticle formula for coating hair outer structural layer

Abstract

The invention relates to a nanoparticle formula for coating the outer layer of a hair structure, which comprises natural oil extracts. The formulation comprises rice bran oil, hydrogenated olive oil, olive oil (Olea europaea fruit oil), non-saponified olive oil (Olea europaea non-saponified fruit oil), rice bran extract in the form of rice bran lipid, nonionic surfactant, emulsifier, sodium benzoate and deionized water. The formulation can be used as an alternative material for hair care products, has a phase size of 150 to 200 nm, and is intended to prevent protein loss to healthy hair due to ultraviolet radiation and high temperature. This technique is achieved by targeted coating of the hair structure outer layer, both in the wet hair state and on the outer layer structure without oil components.

Inventors

• Rong Ruan Ritipon

Assignees

• 黛尔芮集团(2007)有限公司

Dates

Publication Date

20260508

Application Date

20250219

Priority Date

20241108

Claims (3)

1. 1. A nanoparticle formulation for coating an external structural layer of hair, containing a natural oil extract as a component, characterized by comprising:
2. 2. The nanoparticle formulation for coating an outer structural layer of hair according to claim 1, wherein the nonionic surfactant is selected from the group consisting of polysorbate-20, polysorbate-60, polysorbate-80, sorbitan monolaurate-20, sorbitan monolaurate-40, and sorbitan Shan Guisuan ester-60.
3. 3. A nanoparticle formulation for coating an outer structural layer of hair according to claim 1, wherein the emulsifier is selected from the group consisting of glyceryl stearate, glyceryl monostearate, cetostearyl alcohol, cetyl alcohol and stearyl alcohol.

Description

Nanoparticle formula for coating hair outer structural layer Technical Field In the field of chemical engineering, specific research relates to nanoparticle formulations for coating the outer structure of hair, wherein natural oil extracts are indispensable ingredients. Background Nano-products refer to articles that employ nanotechnology during production, or by including nanoparticles to achieve a particular property or function. Cosmetic related products typically involve nanoparticles manufactured by nanoemulsion systems. The system consists of an oil phase, a water phase and a high-concentration surfactant, and is mainly applied to skin care products with the following characteristics or functions of (1) encapsulating or retaining active ingredients, (2) enhancing the stability of the active ingredients in the products, avoiding degradation caused by the reaction of illumination, air or other ingredients, (3) improving the solubility and skin absorptivity of the active ingredients, (4) controlling the release of the active ingredients so as to prolong the efficacy of the active ingredients, and (5) preventing the loss of skin moisture and helping to maintain skin moisture. Hair shafts are the parts of the hair that grow above the scalp and consist mainly of keratin, a fibrous protein. . Its structure includes medulla, cortex and stratum corneum. The medulla is located in the innermost layer of the hair shaft, usually containing air gaps, and is composed mainly of loosely arranged cells. . The cortex is the thickest layer, which is rich in most of the keratin and melanin of the hair, which determines the color of the hair. The melanin granules are distributed throughout the cortex, imparting a natural shade to the hair. In addition, the cortex has embedded therein elongated keratin microfibers, providing flexibility and elasticity to the hair. The outermost structure of hair, called the stratum corneum, is made of hard keratin and is arranged in overlapping scales in a manner similar to that of fish scales. This structure can enhance the hair strength and act as a protective barrier against dirt intrusion so as not to damage the hair. In addition, the stratum corneum also acts as a seal and protects the inner layer from moisture and natural grease loss, helping to maintain the luster and healthy appearance of the hair. However, ultraviolet radiation (UV) and high temperatures can disrupt the integrity of the stratum corneum, leading to keratin loss, and hence hair health. Ultraviolet (UV) radiation, particularly UVA and UVB, can severely damage hair, affecting the superficial stratum corneum and hair roots. If exposed to ultraviolet light for a long period of time, melanin in the hair can be degraded, resulting in color fading and a dry, impaired appearance. UVB radiation breaks down proteins and amino acids in the hair shafts and roots, which can cause hair damage, loss, and even baldness. It is known to use specific hair care products after each shampooing, before styling or before irradiation with sunlight in order to prevent damage to the hair by sunlight. Such products include leave-on hair conditioners or thermal protection sprays which are enriched in UV protective ingredients and which protect hair from sunlight. These products help to retain hair moisture while providing additional protection. In addition, these products are often rich in natural oils such as sweet almond oil, argan oil, coconut oil, camellia seed oil and olive oil. The natural oil has sun-proof and heat-proof effects, and can provide excellent moisturizing effect, nourish hair, and further enhance hair health and comb ease. The Thailand patent application filed on 7/1 2005 (application number 0501003048) discloses a leave-on hair care composition in the form of an oil-in-water (O/W) emulsion comprising wax in the form of a wax dispersion. The wax component is characterized by an oil having a melting point above 45 degrees celsius, the wax being present in the composition in an amount of from 5% to 60% by weight, more preferably from 20% to 50% by weight, and most preferably in the range of from 30% to 45% by weight of the total composition. Suitable waxes include fatty alcohols and fatty acids that are solid at room temperature, such as paraffin waxes, triglycerides or mixtures thereof. Part of the wax is emulsified into the oil phase, and the wax content in the emulsified oil should not exceed 30% by weight, preferably not exceed 10% by weight. The oil phase is composed of non-volatile oil with melting point below 40deg.C, and is selected from triglyceride, fatty acid ester, fatty alcohol, fatty acid and mineral oil, including coconut oil, olive oil and its derivatives or mixture. The dynamic viscosity of these oils is less than 1000 mPas measured at a shear rate of 5s-1 at 35 ℃. The oil phase is suitably present in the composition in an amount of greater than 10% by weight, preferably in an amount of from 5% to 50%, more pre