LK-1083

INCI Name: PEG-10 Dimethicone

Introduction:

LK-1083 is a silicone emulsifier and dispersing agent specifically designed for dispersing fillers or pigments in silicone fluids or organic oils, ideal for use in water-in-silicone and organic oil emulsions. It’s a versatile silicone surfactant and emulsifier for personal care and cosmetic applications, widely employed to achieve even dispersion of pigments in color cosmetics, micronized particles, and inorganic materials such as titanium dioxide (TiO2) and zinc oxide (ZnO) in sunscreen products.

It is effective as a viscosity modifier, enhancing the dispersion of fillers and pigments in silicone fluids and organic oils. It is formulated for development of stable water-in-silicone and organic oil emulsions. This multifunctional agent can be used as a leveling agent, and emulsifier depending on its final application.

Key Attributes:

  • Dispersing Agent: Ensures even dispersion of pigments, particles, and inorganic materials.
  • Surface Tension Reduction: Improves spreading and mixing by lowering molecular force.
  • Emulsion Stability: Maintains uniform liquid mixtures and prevents separation.
  • Formulation Compatibility: Ensures smooth ingredient interaction.

Technical Details:

Applications:

Sun Care: Sunscreen Creams and Lotions

  • Efficiently disperse micronized and inorganic UV filters (TiO2/ZnO).
  • Prevents separation in sunscreens and sun blocks products.
  • Improves spreadability for smooth application.
  • Ensures even coverage across the skin.
  • Ideal for personal care and cosmetic formulations.

Color Cosmetics: Foundations, Blushes, Eye Shadows, BB Creams and CC Creams

  • Ensures even pigment dispersions in color cosmetics.
  • Maintains emulsion stability in foundations, blushes, BB creams, and CC creams.
  • Provides a blend-able, smooth finish.
  • Suitable for a variety of cosmetic formulations.

Skin Care: Creams and Lotions

  • Improves skin texture and moisture retention.
  • Ensures stability in water-in-silicone and organic-oil emulsions.
  • Effectively disperses micronized particles.
  • Enhances the feel and application of formulations.
  • Suitable for various cosmetic and personal care products.

FAQs:

 Q1. What is the INCI name of LK-1083?
Ans: The INCI name of the LK-1083 is PEG-10 Dimethicone.

Q2. What is the HLB range of LK-1083?
Ans: The HLB value of LK-1083 is in the range of 3–5, classifying it as a low HLB emulsifier.

Q3. How does LK-1083 help reduce white cast in mineral sunscreen formulations?
Ans: LK-1083, a low HLB PEG-10 Dimethicone, acts as an effective dispersing aid for mineral UV filters such as zinc oxide and titanium dioxide. It helps break down particle agglomerates and ensures uniform distribution in the oil phase, resulting in a more even film on the skin and reduced white cast.

Q4. How does LK-1083 differ from LK-7100D despite having the same INCI name?
Ans:  Although both share the same INCI name, they differ in HLB. LK-7100D has a higher HLB and is better suited for oil-in-water (O/W) systems such as light-weight lotions and sunscreens. LK-1083 has a lower HLB (3–5), making it more suitable for water-in-oil (W/O) or water-in-silicone systems requiring stronger oil-phase compatibility and barrier properties.

Q5. How can LK-1083 be used for pigment dispersion in color cosmetic formulations?
Ans: LK-1083, in combination with LK-145 (Cyclopentasiloxane), enables efficient dispersion of oil-soluble and treated pigments in silicone or oil-based systems, improving color uniformity, stability, and sensory profile.

Q6. In which emulsion systems is LK-1083 most suitable?
Ans: LK-1083 is primarily suited for water-in-oil (W/O) and water-in-silicone emulsions due to its low HLB and oil-phase compatibility.

Q7. What is the recommended use level of LK-1083 for dispersing ZnO or TiO₂ in sunscreens?
Ans: A dosage of ~ 4–10% is typically sufficient to achieve good dispersion and stability of mineral UV filters

Q8. Is LK-1083 compatible with different oil phases used in formulations?
Ans: Yes. LK-1083 is compatible with a wide range of silicone fluids as well as organic oils, offering good formulation flexibility.

Q9. Can LK-1083 be combined with other emulsifiers or surfactants in formulations?
Ans: Yes, it can be combined with non-ionic, anionic, and cationic surfactants. However, system compatibility and performance should be validated for each formulation.

Q10. How does LK-1083 improve pigment dispersion in emulsion-based primers and foundations?
Ans: It acts as a dispersing aid for micronized pigments and fillers, reducing agglomeration and ensuring uniform distribution, which helps avoid patchiness during application.

Q11. Does LK-1083 require a carrier fluid for effective ZnO dispersion?
Ans: Yes. After pre-wetting ZnO with LK-1083, it is typically dispersed in a volatile carrier such as Cyclopentasiloxane before incorporation into the formulation.

Q12. Which types of pigments are most compatible with LK-1083?
Ans: Oil-dispersible or silicone-treated pigments are preferred for optimal compatibility and uniform dispersion.

Q13. Can LK-1083 function as an emulsifier or stabilizer in W/O (Water in Oil) system?
Ans: Yes. It helps stabilize water-in-silicone or hybrid W/O systems by reducing interfacial tension and improving phase integrity.

Q14. Is LK-1083 suitable for use in make-up foundation formulations?
Ans: Yes,It enhances pigment wetting and dispersion, resulting in improved spreadability, uniformity, and reduced streaking.

Q15. Can LK-1083 be used in gel-based eyeliner systems, and what is the ideal dosage?
Ans: Yes. It supports pigment dispersion and improves application smoothness. Recommended usage is typically 1–3%, depending on system requirements.

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