How does cosmetic grade mineral oil provide lasting moisturizing for sunscreen oil?
Release Time : 2025-04-05
In the formulation design of sunscreen products, cosmetic grade mineral oil, as a basic oil ingredient, provides key support for the lasting moisturizing effect of sunscreen with its unique physical and chemical properties.
Moisturizing mechanism of cosmetic grade mineral oil: forming a physical barrier
Cosmetic grade mineral oil is an inert oil with high occlusive properties, which can form a dense oil film on the skin surface. This oil film can effectively block water evaporation and reduce water loss caused by ultraviolet radiation, dry environment and other factors. Its working principle is similar to that of a "water-locking film", which maintains the water content of the skin's stratum corneum through physical barrier, and is especially suitable for dry or barrier-damaged skin.
Experiments show that the oil film formed by cosmetic grade mineral oil can significantly reduce transepidermal water loss (TEWL), and its moisturizing effect can last for several hours. For example, adding 5% cosmetic grade mineral oil to SPF30 sunscreen can keep the skin's moisture content stable for 4 hours, while the control group without adding cosmetic grade mineral oil has a significantly faster water loss rate.
Formula synergy: improving the stability of sunscreens
Cosmetic grade mineral oil has good compatibility with chemical sunscreens (such as ethylhexyl methoxycinnamate), which can promote the uniform dispersion of sunscreens and avoid the attenuation of sunscreen effects due to crystallization. At the same time, cosmetic grade mineral oil as a solvent can reduce the irritation of sunscreens and reduce potential damage to the skin.
In addition, when cosmetic grade mineral oil is compounded with silicone oil (such as polydimethylsiloxane), it can form an "oil-in-water" or "silicone-in-water" emulsion system to enhance the adhesion and film-forming properties of sunscreens. This formula design can prolong the residence time of sunscreens on the skin surface and reduce the shedding of sunscreen films caused by sweating and friction.
Optimized user experience: giving a silky touch
The lubricating properties of cosmetic grade mineral oil can improve the spreadability of sunscreens, making the texture easier to spread and non-sticky. Its low polarity structure can reduce the friction between the sunscreen and the skin, avoiding the "pulling feeling" when applying, which is especially suitable for sensitive skin or skin in the recovery period after surgery.
Some high-end sunscreens achieve a "melt-on-touch" skin feel by adjusting the molecular weight distribution of cosmetic grade mineral oil. For example, the use of medium molecular weight cosmetic grade mineral oil (such as white mineral oil) can provide instant moisturizing without causing acne due to being too thick.
Safety and stability: Extending the shelf life of products
Cosmetic grade mineral oil is chemically stable and not easy to oxidize and deteriorate, which can effectively extend the shelf life of sunscreen. Its inert characteristics make it difficult to react with other ingredients, avoiding odor or skin irritation due to rancidity.
In addition, cosmetic grade mineral oil is naturally resistant to ultraviolet rays and will not produce harmful substances due to light decomposition. This feature makes it an ideal matrix for outdoor sunscreen products, especially for scenes exposed to the sun for a long time.
Through multiple mechanisms such as physical moisturizing, formula synergy, and skin feel optimization, cosmetic grade mineral oil provides a long-lasting moisturizing foundation for sunscreen. Its stability and safety make it an indispensable ingredient in sunscreen products. Especially in scenarios where high protection and long-lasting moisturizing are required, the role of cosmetic grade mineral oil is irreplaceable.
Moisturizing mechanism of cosmetic grade mineral oil: forming a physical barrier
Cosmetic grade mineral oil is an inert oil with high occlusive properties, which can form a dense oil film on the skin surface. This oil film can effectively block water evaporation and reduce water loss caused by ultraviolet radiation, dry environment and other factors. Its working principle is similar to that of a "water-locking film", which maintains the water content of the skin's stratum corneum through physical barrier, and is especially suitable for dry or barrier-damaged skin.
Experiments show that the oil film formed by cosmetic grade mineral oil can significantly reduce transepidermal water loss (TEWL), and its moisturizing effect can last for several hours. For example, adding 5% cosmetic grade mineral oil to SPF30 sunscreen can keep the skin's moisture content stable for 4 hours, while the control group without adding cosmetic grade mineral oil has a significantly faster water loss rate.
Formula synergy: improving the stability of sunscreens
Cosmetic grade mineral oil has good compatibility with chemical sunscreens (such as ethylhexyl methoxycinnamate), which can promote the uniform dispersion of sunscreens and avoid the attenuation of sunscreen effects due to crystallization. At the same time, cosmetic grade mineral oil as a solvent can reduce the irritation of sunscreens and reduce potential damage to the skin.
In addition, when cosmetic grade mineral oil is compounded with silicone oil (such as polydimethylsiloxane), it can form an "oil-in-water" or "silicone-in-water" emulsion system to enhance the adhesion and film-forming properties of sunscreens. This formula design can prolong the residence time of sunscreens on the skin surface and reduce the shedding of sunscreen films caused by sweating and friction.
Optimized user experience: giving a silky touch
The lubricating properties of cosmetic grade mineral oil can improve the spreadability of sunscreens, making the texture easier to spread and non-sticky. Its low polarity structure can reduce the friction between the sunscreen and the skin, avoiding the "pulling feeling" when applying, which is especially suitable for sensitive skin or skin in the recovery period after surgery.
Some high-end sunscreens achieve a "melt-on-touch" skin feel by adjusting the molecular weight distribution of cosmetic grade mineral oil. For example, the use of medium molecular weight cosmetic grade mineral oil (such as white mineral oil) can provide instant moisturizing without causing acne due to being too thick.
Safety and stability: Extending the shelf life of products
Cosmetic grade mineral oil is chemically stable and not easy to oxidize and deteriorate, which can effectively extend the shelf life of sunscreen. Its inert characteristics make it difficult to react with other ingredients, avoiding odor or skin irritation due to rancidity.
In addition, cosmetic grade mineral oil is naturally resistant to ultraviolet rays and will not produce harmful substances due to light decomposition. This feature makes it an ideal matrix for outdoor sunscreen products, especially for scenes exposed to the sun for a long time.
Through multiple mechanisms such as physical moisturizing, formula synergy, and skin feel optimization, cosmetic grade mineral oil provides a long-lasting moisturizing foundation for sunscreen. Its stability and safety make it an indispensable ingredient in sunscreen products. Especially in scenarios where high protection and long-lasting moisturizing are required, the role of cosmetic grade mineral oil is irreplaceable.
