Can OILREE® MY967 be used in an oil-in-water emulsification system?
Material properties of OILREE® MY967
OILREE® MY967 is a high-performance composite cosmetic raw material, mainly made by scientifically combining peg-100 stearate and glyceryl stearate.The proportion of its core components is very clear, of which peg-100 stearate accounts for 72-75% and glyceryl stearate accounts for 23-25%. The combination of the two can play a synergistic role.From the point of view of physical properties, at 25°C, it is light yellow granular with a little peculiar smell.
In terms of key chemical indicators, the stability of MY967 is particularly good.Its acid value is ≤5 mgKOH/g (the actual detection value of a particular batch is 3.98 mgKOH/g), which shows that it is not easy to hydrolyze during storage and use.The pH value of the 1% aqueous solution is between 6 and 7.5 (6.65 measured in the same batch), which is particularly suitable for the acid-base environment of our human skin.The melting point is controlled between 50-60°C (measured 52.3°C), and it can be quickly melted and dispersed when heated to this temperature during production, which is very worry-free to operate.
From the molecular structure point of view, the molecular weight of peg-100 stearate is 622.91 Da, and it has sufficient hydrophilic and oleophilic groups to effectively reduce the interfacial tension between oil and water.Glyceryl stearate has a smaller molecular weight, 358.556 Da, which can not only assist in emulsification, but also optimize the texture of the final product.In addition, MY967 is fat-soluble and has good compatibility with non-polar oils such as mineral oils. As long as it is stored at ≤30°C and operated in accordance with specifications, it is not prone to decomposition or performance degradation.
The core advantages of MY967 in oil-in-water emulsification
As an Oil in water emulsion specially used in oil-in-water (O/W) systems, MY967 relies on its own unique material properties and shows many practical advantages, which can effectively solve key problems in cosmetic formulation and production.：
High emulsification efficiency, can carry more oil phase
MY967 has excellent emulsifying ability. 3 parts of it can emulsify up to 60 parts of the oil phase dominated by non-polar oils. This high oil load capacity is much stronger than traditional single-component emulsifiers.In the actual formula, as long as the amount of 0.5-3.0% is added, a stable emulsifying system can be made, which greatly reduces the proportion of emulsifiers in the formula, and can leave more room for functional raw materials such as moisturizers and active ingredients to be added.Whether it is a refreshing lotion with low oil content or a moisturizing cream with high oil content, it can disperse the oil phase evenly without stratification or oil-water separation.
Stable formula and good compatibility
The composite system of Peg-100 stearate and Glyceryl stearate gives MY967 good stability.The emulsion droplets formed after emulsification are small and uniform. Under normal storage conditions, the texture of the product can be stable for up to 2 years, and there will be no problems of stratification, flocculation or precipitation.At the same time, it can be well matched with various common cosmetic raw materials, such as moisturizers such as glycerin and hyaluronic acid, active ingredients such as vitamin C and niacinamide, and preservatives that comply with regulations. Adverse reactions such as precipitation and discoloration will not occur, which provides more flexibility for formula innovation.When used in combination with moisturizers, it can enhance the moisturizing effect without increasing the stickiness. When combined with other oil-in-water emulsifiers, it can also adjust the emulsifying strength to meet different texture needs.
Gentle and skin-friendly, good feeling of use
Safety and skin feeling are the core requirements of cosmetic formulas, and MY967 performs well in both aspects.Toxicological tests have shown that it is non-toxic in a single oral administration, with an oral lethal dose (LD50) >5000 mg/kg, no irritation to the eyes and skin, no potential risk of sensitization, and no carcinogenicity or reproductive toxicity in chemical structure.In terms of use experience, the glyceryl stearate in the formula can play a role in thickening and lubricating, making the emulsified product full but not greasy, smooth to apply, fast absorption, and will not leave sticky residues on the surface of the skin. It solves the common problems of “looking fresh but dry” or “moisturizing but sticky” in oil-in-water products.
Easy to produce and operate
The physical properties of MY967 are particularly suitable for industrial production.During production, it is heated to a melting point range of 50-60°C. It can melt quickly and fully blend with the oil phase without long-term stirring, which can significantly shorten the production cycle and reduce energy consumption.Compared with those powdered emulsifiers that are easy to agglomeration and difficult to disperse, it is simpler to feed and can reduce the waste of raw materials.
Typical applications of MY967
Relying on its excellent emulsifying properties and safety characteristics, MY967 is widely used in cosmetics with various oil-in-water systems, mainly in these fields.：
Skin creams and lotions
It is the core
Emulsifier of daily skin care products such as moisturizing lotions, nourishing creams, and sensitive skin care products.For example, in a refreshing moisturizing lotion containing 15-20% non-polar oil, add 1.0-1.5% of MY967 to achieve stable emulsification, making the product light and easy to absorb; in a nourishing night cream containing 30-40% oil, increase the dosage to 2.0-3.0%, which can not only maintain the rich texture and stability of the product, but also ensure that it is not greasy when used.When used with skin sensation modifiers such as
Dimethicon, it can further enhance the silky touch of the product and optimize the use experience.
Body care products
It is suitable for use in products such as body lotions and body creams that need to take into account moisturizing and malleability.Body care products usually require a certain consistency to achieve long-lasting moisturizing, and the thickening effect of MY967 can reduce the dependence on other thickeners.The body lotion emulsified with it has good ductility, can be evenly applied to a large area of skin, and can keep the skin hydrated and not sticky.
Gentle baby care products
Because of its low irritation and good skin-friendly properties, it is also suitable for use in baby lotions and baby creams.Baby skin is delicate and sensitive, and the safety threshold of raw materials is very high. MY967 is non-irritating, non-sensitizing, and is well compatible with the gentle formula system, which can not only meet the safety requirements of infant care products, but also ensure stable emulsification and gentle use experience.
Precautions for selection and use
Although MY967 has obvious advantages in the oil-in-water emulsification system, these points must be paid attention to when actually choosing and using it in order to maximize its performance.：
Match the appropriate oil phase type
MY967 is suitable for systems with non-polar oils (such as mineral oils and white oils) as the main oil phase. Its oleophilicity can exert the best emulsification efficiency in such systems.If the content of polar oil in the formula is relatively high, it is recommended to do a compatibility test in advance, or adjust its dosage appropriately to ensure stable emulsification.
Precise control of production process parameters
During emulsification production, the heating temperature should be controlled between 50-60°C to ensure that MY967 is completely melted.The stirring speed and time should be adjusted according to the oil content of the formula: the low-oil formula only needs to be stirred moderately, and the high-oil formula can appropriately extend the stirring time or increase the stirring speed to help achieve uniform emulsification.In addition, the pH value of the formula system should be maintained between 6-7.5 to avoid excessive pH deviation affecting the performance of the emulsifier.
The basic characteristics of MY967 and its application in oil-in-water cream
Core requirements of oil-in-water cream formula
Oil-in-water cream is the mainstream form of skin care products, and there are three core requirements for emulsifiers: stable emulsification, good skin feeling, and safe and compatible.First of all, the stability of emulsification is the basis-the emulsifier must be able to disperse the oil phase into small droplets, and remain stable for a long time, without stratification or oil analysis.Secondly, the skin feeling directly affects the use experience, and the emulsified product is required to have a full texture but not greasy, smooth application and fast absorption.Finally, safety and compatibility are critical-emulsifiers should be non-irritating to the skin, can be combined with various functional ingredients, and meet national and international cosmetic safety standards.Traditional single emulsifiers are often difficult to meet these three points at the same time, and composite emulsifiers such as MY967 can achieve comprehensive performance improvement through scientific collocation.
Applicability in oil-in-water cream formula
Relying on its own unique performance, MY967 just meets the core requirements of the oil-in-water cream formula：
In terms of emulsification stability, peg-100 stearate and glyceryl stearate work synergistically to form a stable emulsifying film on the surface of the oil droplets, effectively preventing droplet aggregation and stratification.Its low acid value ensures that the cream has a low degree of hydrolysis during the shelf life.
In terms of skin texture optimization, the molecular weight matching of the two ingredients in MY967 is very critical.The high molecular weight peg-100 stearate builds an emulsified skeleton, and the low molecular weight glyceryl stearate fills the gap to enhance the sense of lubrication.This structure makes the cream have a delicate and full texture, good ductility, and not sticky when applied.After absorption, the skin feels fresh and moisturized, and it will not feel heavy and greasy due to excessive use of emulsifiers or improper ratio.
In terms of safety, the pH value of MY967 (6-7.5) is close to that of human skin and will not destroy the skin's acidic protective film.It is non-irritating, non-allergenic, and compatible with the functional ingredients in most face creams, such as anti-aging retinol, peptides, whitening arbutin, tranexamic acid, and various plant extracts.It will not affect the activity of these functional ingredients, nor will it cause adverse reactions such as discoloration and precipitation, which provides a reliable guarantee for the development of multifunctional face creams.
In addition, when pursuing high-consistency cream formulas, MY967 can also work synergistically with
Thickening suspension to further improve the consistency stability of the system without increasing the stickiness and meet the development needs of creams of different textures.
Hubei Mingya New Material Technology Co., Ltd.
