Hello,

Are you still struggling to achieve both a lightweight feel and sufficient hydration in mist and sheet mask formulations?
Typically, reducing oil content for a lighter feel leads to poor moisturizing power, while increasing oil for hydration causes stickiness and stability issues. This has long made a compromise between Sensory Feel, Hydration, and Stability inevitable.

To overcome these formulation limits, Sunjin Beauty Science introduces the AQUA Oil Series, powered by our proprietary 'SUNJIN Micro-shot Hydration' technology.

■ What is the AQUA Oil Series?

AQUA Oil is an advanced oil delivery system. It encapsulates a high concentration of oil within a glycerin-based system, pre-stabilized as a micro-emulsion with a particle size of approximately 0.118 μm.
Even oils that are typically difficult to solubilize can be easily dispersed into the water phase, allowing seamless application in low-viscosity formulations without altering overall viscosity.

In addition, its PEG-free, preservative-free, and GMO-free design ensures compatibility with global clean beauty standards, including COSMOS.

Benefits

• PEG Free, Clean Beauty Concept, COSMOS
• GMO Free(No Lecithin)
• No water inside, can't be frozen during storage
• No Preservative inside
• Self Emulsification

■ Why Micro-emulsion?

AQUA Oil forms a micro-emulsion structure of approximately 0.118 μm, which is about 30 times smaller than a general emulsion (about 4.253 μm).

When the particle size becomes this small, it goes beyond simple physical differences, and the behavior of the formulation and skin application itself changes. As the specific surface area increases, the diffusion efficiency within the skin rises, and the oil is evenly dispersed, reduced stickiness and an improved sensory feel. In addition, it enables uniform film formation, helping to achieve TEWL reduction.

As a result, it becomes possible to create formulations that are “as light as water, yet deliver oil-level hydration.”

■ Delivery Verification (Raman Spectroscopy)

Raman Spectroscopy analysis shows that the micro-emulsion structure demonstrates increased penetration depth compared to conventional emulsions.
This suggests the potential to go beyond surface-level hydration, supporting an Inner Glow effect.

■ Formulation Flexibility

AQUA Oil is a universal oil delivery system not limited to specific formulations and can be flexibly applied to various products.

• Cleanser: Reduction of dryness after cleansing, finish without residue
• Toner / Mist: Maintenance of sprayability + simultaneous implementation of oil hydration
• Serum / Ampoule: Strengthening the delivery efficiency of active ingredients
• Gel Cream: Fresh moisturizing feel without greasiness
• Sheet Mask: Uniform application, reduced stickiness, improved absorption feel
• Hair Care: Lightweight coating feel and natural shine
  
  
  

■ Differentiation in Sheet Mask Application

Conventional oil-based sheet masks rely on macro-emulsions, where thickeners are required for stability, often resulting in increased stickiness and reduced sensory performance.
In contrast, AQUA OIL utilizes a self-emulsifying micro-emulsion system that instantly disperses into fine particles upon contact with water.It maintains stable dispersion with no additional thickeners required, enabling smooth and uniform application across the sheet.

As a result, it allows the development of sheet masks that deliver low viscosity, high hydration, and low stickiness.

■ Conclusion

AQUA OIL Series is a next-generation oil delivery solution that enhances delivery efficiency, formulation stability, and sensory performance.
It offers new formulation possibilities beyond the limitations of conventional systems.

🔎 Summary Q&A
Q1. Why is hydration maintained despite the lightweight texture?
A. Because the oil is finely dispersed in a micro-emulsion (~100 nm) structure, enabling uniform film formation even at low concentrations.

Q2. When is the best time to use AQUA OIL?
A. It is ideal for low-viscosity formulations such as mists, serums, essences, and sheet masks, especially when enhanced hydration is needed without stickiness.

Q3. How can it be applied to existing formulations?
A. It can be directly added to the water phase and used to partially or fully replace conventional oils.

Please feel free to contact us if you would like to request samples.

Areum Jeong / Regional Sales Manager
E-mail : sales1@sunjinbs.com