Steareth-2 and steareth-21 form a stable emulsion system
As an important functional raw material connecting the oil phase and the aqueous phase, emulsifiers have gradually become a key link in the research and development of cosmetic formulas.Especially in the oil in water system, emulsifiers not only affect the final appearance and texture of the product, but also determine whether the oil, active ingredients, and the aqueous phase system can maintain long-term stability.
With its good formula adaptability, strong stability and wide range of applications, nonionic emulsifiers have become an important development direction in the skin care raw material market.
Mingya continuously optimizes the solutions of nonionic polyether emulsified raw materials around the needs of cosmetic emulsification systems. Among them, steareth-2 and steareth-21 provide more stable emulsification support for skin care, base makeup and body care products through the synergy between different hydrophilic and oleophilic structures.
I. The oil-in-water emulsification system has become an important foundation for modern cosmetic formulas.
Oil-in-water system usually refers to the emulsified structure of oil droplets dispersed in a continuous aqueous phase. This kind of system has the characteristics of refreshing, easy to apply, and light skin feeling. Therefore, it is widely used in lotions, creams, sun protection, and base makeup moisturizing products.
Compared with the simple pursuit of emulsifying effect, modern formula development pays more attention to the comprehensive performance of the emulsifying system: it is necessary to ensure the stability of the particle size of the oil droplets and avoid problems such as oil analysis and stratification during long-term storage; it is necessary to take into account the sense of use of the product, so that the cream has good ductility and fineness; in addition, it is also necessary to adapt to more and more complex efficacy-based formulas, such as adding plant extracts, moisturizers, active ingredients, and different types of emollient oils.
Therefore, an excellent oil-in-water emulsification system does not rely on a single Emulsifier to complete, but through a reasonable combination of different structural raw materials to achieve the balance of oil phase, water phase and interface.This is also the important value of Oil in water emulsion in the development of modern cosmetics.
II. Steareth-2 and steareth-21: complementary functions brought about by different structures
In the nonionic emulsifier system, the same series of emulsified raw materials with different hydrophilic degrees can often form a good synergistic relationship.The OILREE®MY92-B STEARETH-2 and OILREE®MY972-B STEARETH-21 launched by Mingya are designed based on this technical logic.
- OILREE®MY92-B STEARETH-2 is an emulsified raw material for fatty alcohol polyoxyethylene ethers.Due to the relatively high proportion of oleophilic parts in the molecular structure, it is easier to interact with oils and fats in the emulsifying system, which can help improve the dispersion state of the oil phase and improve the binding ability of the oil phase to the emulsified interface.In the practical application process, it is usually not used as a separate emulsifier, but as an oil-phase auxiliary emulsifying component, which works with the hydrophilic emulsifier to build a more complete emulsifying structure.
- OILREE®MY972-B STEARETH-21 has stronger hydrophilic characteristics and can play a more obvious interface stabilization role in the aqueous phase system.Its longer polyoxyethylene chain structure can help form a stable hydration layer and improve the protection ability of oil droplets after dispersion.steareth-2 is better at connecting the oil phase; steareth-21 is better at stabilizing the water phase; after the two are combined, a more complete oil-water interface protection structure can be formed.
III.How to improve the emulsification stability of the complex ligand system
In actual formulation development, it is often difficult for a single emulsifier to meet all needs.If the system relies too much on oleophilic emulsifiers, although it can enhance the oil binding ability, the water phase stabilization ability may be insufficient; and if the proportion of hydrophilic emulsifiers is simply increased, it may lead to a decrease in the oil droplet protection ability in high-grease formulas.
The complex value of steareth-2 and steareth-21 lies in the complementarity of the two.During the emulsification process, steareth-2 can enter the vicinity of the oil-water interface and form a stable combination with the grease components, helping to reduce the risk of aggregation between oil droplets.At the same time, steareth-21 forms a protective layer in the direction of the aqueous phase, so that the dispersed oil droplets can exist more evenly in the continuous aqueous phase.
This two-way effect makes the emulsifying system more stable and also provides greater formulation space for the development of different types of products.In highly nourishing creams, a higher proportion of emollient oils are usually added to the formula to enhance the sense of moisturizing.If the emulsifying system is insufficient, the paste structure is loose or the stability decreases during storage.Through the reasonable combination of steareth-2 and steareth-21, it can help the high-grease system maintain a more uniform state, while improving the application experience of the final product.
IV. From basic skin care to Makeup moisturizer, emulsification technology promotes product innovation
With the continuous development of the fusion trend of “skin care + base makeup”, more and more brands are beginning to pay attention to product types that combine moisturizing, retouching and light makeup effects.For example, products such as Makeup Moisturizer need to meet the moisturizing properties, light skin feeling, and pre-makeup adaptability at the same time, which puts forward higher requirements for the emulsifying system.Compared with traditional heavy-duty creams, modern consumers are more inclined to: apply and absorb quickly; the skin feels silky; does not produce a significant greasy feeling; and maintains a comfortable state for a long time.
The combination of steareth-2 and steareth-21 can help adjust the product structure, so that lotions, creams, and base makeup moisturizing products have a more delicate appearance and a smoother experience.In different types of personal care products, emulsification technology also plays an important role.Some care products will use functional raw materials such as Catic softener to improve the softening experience, while the emulsification system is responsible for ensuring the stability of the overall formula structure, and the two jointly improve the performance of the end product.
V.In the complex formulation environment, higher requirements are put forward for the emulsifying system
As a non-ionic emulsifying combination, steareth-2 and steareth-21 have a good range of adaptability in the formulation development process.In nourishing products containing a variety of oils and fats, it can help maintain system stability; in lightweight emulsions, it can improve product spread; in sunscreen and nursing products, it can provide basic infrastructure support for complex systems.
VI.Synergy of multiple types of emollient raw materials to expand the space for formula application
Modern skin care products usually do not rely only on emulsifiers to complete the product experience, but through a combination of emulsifiers, Emollients, thickeners, and functional raw materials to achieve the final effect.
The reasonable collocation between different raw materials enables the emulsifying system to cover a richer product development direction.From face creams and body creams to sunscreen and base makeup fusion products, a stable emulsification system is becoming an important technical basis for brands to enhance their product competitiveness.
VII.Upgrading the supply chain of emulsified raw materials to promote industry development
As a supplier of cosmetic raw materials, Mingya continues to develop and upgrade emulsifiers, synthetic oils and functional raw materials, and provides more reliable raw material solutions to customers around the world through stable production systems and technical service capabilities.
The development of the oil-in-water emulsification system is not only the upgrade of the emulsifier product itself, but also represents the cosmetics industry's continuous pursuit of stability, safety and consumer experience.
In the future, as skin care products become more refined, structural complementary emulsifying systems such as steareth-2 and steareth-21 will play a role in more innovative formulas, providing more flexible and efficient technical support for brand product development.
Hubei Mingya New Material Technology Co., Ltd.
