Why is Sorbitan widely used in sunscreen systems?
Sorbitan's raw materials have unique multi-functional advantages in the field of cosmetic formula research and development, taking into account the stability of the emulsifying system, the construction of the internal structure of the oil phase, and the improvement of the water resistance of the finished product. Three core roles.At present, mainstream sunscreen products on the market are basically equipped with oil-in-water and oil-in-water mixed emulsification systems. During daily use, the skin sweats, rinses with water, and infiltrates its own sebum will destroy the surface sunscreen film, directly weakening the protective effect. Sorbitan ester can just solve this kind of actual use pain point.In addition to sunscreen products, the complete set of raw materials can also be adapted to various cosmetics such as skin care, base makeup, and body care, and the application scenarios are very wide.
The core reason why Sorbitan is widely used in sunscreen systems
Why are Sorbitan raw materials suitable for various sunscreen formula systems?
1) Oleophilic characteristics
Sorbitan is an oleophilic emulsified raw material. Its own HLB value is low. The long fatty acid chain attached to the molecule can be firmly attached to the formula oil, forming a dense and continuous interfacial film on the contact surface of the oil and water phases. It is also an essential core substrate for the deployment of mature Water in oil emulsifier, or as an auxiliary stable structure of the O/W system.
When put in sunscreen products, this structural advantage can bring multiple practical effects. It can reduce the loss of sunscreen raw materials caused by rinsing with water. After sweating, the ultraviolet filter material will not be allowed to spread at will, and the sunscreen protection ability will not fluctuate significantly during the application process.If a brand wants to create a sunscreen product with waterproof properties, this raw material is also an essential component in the formula and an important foundation to support the claim of related efficacy.
2) Stable long-term SPF protection performance
For sunscreen emulsions to play a stable protective role, organic and inorganic sunscreen powders need to be evenly dispersed throughout the system.Sorbitan can wrap every oil droplet carrying sunscreen. It is not easy for oil droplets to fuse and agglomerate under high-speed stirring and storage in high and low temperature environments. After being applied to the skin, a thick and uniform protective film is formed.
The finished product is stored for a long time or used on the face for a long time, and the sun protection index will not drop significantly, effectively avoiding the loss of efficacy caused by formula stratification and powder precipitation.
3) Excellent adaptability to the high-oil additive formula
Most sunscreen products will add a large number of functional oil-phase raw materials, including all kinds of commonly used organic sunscreens, emollient oils, silicon-based smooth raw materials and film-forming additives. The system is often used with CETYL PALMITATE to synergistically adjust the moisturizing degree of the cream.Sorbitan has good compatibility with non-polar oils, synthetic ester oils, and hydrophobic sunscreen filter materials. Even if the amount of oil added is high, the entire system can still maintain a stable state, which is suitable for the deployment of high-oil sunscreen products.
4) Wide adjustable range of HLB
There is a clear distinction between the polarity intervals of different types of sorbitan esters
· smoothness
· The paste grasps the feel
· Residual feeling of skin after application
· Overall water and sweat resistance level
Practical application of OILREE® Sorbitan in sunscreen formulas
OILREE®MY S40
INCI name: Sorbitan palmitate
This raw material has outstanding shaping ability and its own melting point is relatively higher. Adding it to the formula can improve the fullness and viscosity of the cream, and further improve the film-forming integrity of O/W sunscreen products.
It is more suitable for creating a nourishing sunscreen with a rich and thick texture and a stable cream state.
OILREE®MY S60
INCI name: Sorbitan stearate
It belongs to the classic emulsified substrate used in sunscreen formulas for many years. It has a solid emulsifying ability and excellent long-term stability under a high-oil system. It can also achieve good synergy with fatty alcohol and waxy raw materials.
It is suitable for the traditional sunscreen cream formula that pursues long-term storage and stability, and it is also the most commonly used general-purpose raw material for daily proofing in daily chemical factories.
OILREE®MY S80
Raw material INCI: Sorbitan oleate
The molecular fluidity is stronger, which brings excellent spreading ability to the formula, optimizes the feeling of applying on the face, reduces the feeling of pulling, and makes it easier to make sunscreen products with a refreshing and light texture.
A light-feeling sunscreen lotion suitable for daily commuting, which fits the skin care needs of the public who prefer a refreshing skin feeling.
OILREE®MY S85
INCI name: Sorbitan trioleate
It is the preferred raw material for the deployment of water-resistant formulas. The oil-phase skeleton has outstanding ability to build. After compounding a small amount of Peg 7 glyceryl cocoate, it can further enhance the product's ability to resist sweat and sebum dissolution. The waterproof and sun protection system that focuses on outdoor travel and sports scenes will give priority to this raw material.
A set of sunscreen products with excellent overall performance usually adopts a variety of compound ideas, using Sorbitan to build the basic cream structure, polymer emulsifiers to strengthen the overall stability, with film-forming raw materials to extend the makeup holding time, and finally with a variety of ultraviolet filter materials to achieve stable SPF protection capabilities, taking into account the multiple needs of texture, stability, and use tolerance.
Summary (core application logic)
Sorbitan can be widely used in sunscreen formulas, and its comprehensive advantages are very intuitive.Such raw materials can build a firm and complete oil-water interface film inside the oil phase, enhance the overall water- and sweat-resistant use effect of the finished product, stabilize the uniform dispersion of the sunscreen powder inside the system, and rely on a variety of differentiated models to freely adjust the product texture, from heavy nourishing cream to light and light moisturizing lotion can be achieved, in real use scenarios such as sweating, water-stained, and long-term storage, a stable sunscreen protection effect is continuously maintained.
Extension plate
Not only is sun protection a single product, OILREE® Sorbitan series raw materials can play a role in all kinds of skin care and makeup products, and the underlying adaptation logic is highly interlinked with the sun protection formula.The main high-moisturizing moisturizing creams and large-capacity body creams promoted in autumn and winter will add a lot of emollient oils, which are prone to oil-water separation and rapid shedding of the surface moisturizing film. A compound of S60 can stabilize the high-ester oil phase system and extend the moisturizing time on the surface of the skin.Adding a small amount of S85 to base makeup products such as liquid foundation and cream can relieve the mottled makeup problem caused by the dissolution of sebum in the afternoon, and enhance the ability of the powder to blend into the skin.
Hubei Mingya New Material Technology Co., Ltd.
