LK-Q7: Cyclic-free film former for long-lasting, water-resistant formulations

INCI Name: Dimethicone (and) Trimethylsiloxysilicate

LK-Q7 is a high performance silicone film forming cyclic-free blend designed to enhance durability, water repellency, and wash off resistance in personal care formulations. By combining the flexibility of linear volatile polydimethylsiloxane with the strong film forming properties of a high molecular weight silicone resin, LK-Q7 forms a uniform, breathable film on the skin surface.
This film helps protect the skin while maintaining comfort, making LK-Q7 particularly suitable for sun care, color cosmetics, and lipstick formulations where long lasting performance and resistance to external stress are critical.

Key features

  • Cyclic-free silicone composition:
    Formulated without cyclic siloxanes, supporting clean beauty standards and evolving global regulatory expectations.
  • Durable, flexible film formation:
    Forms a uniform, long-lasting film that enhances wear, adhesion, and water resistance without a heavy or greasy feel.
  • Enhanced water & wash-off resistance:
    Improves resistance to water, sweat, and cleansing, extending product longevity in rinse-off and leave-on formulations.
  • Lightweight, non-tacky sensory profile:
    Delivers smooth application and a comfortable after-feel suitable for premium personal care formulations.
  • Formulation versatility:
    Compatible with a wide range of personal care applications, including color cosmetics, sun care, and skin care systems.

Technical Details:

Physical Parameters Values
Appearance Clear transparent liquid
Viscosity Grades at 25°C (cPs) ~600
Refractive Index at 25°C 1.41

Applications:

  1. Skin Care Formulations
    LK-Q7 is well suited for protective skin care products where resistance and durability are essential.
    • Protective creams and lotions
    • Barrier creams for frequent wash conditions.
    • Working hands formulations where lubricity is undesirable
  2. Sun Care Products
    In sunscreen creams and lotions, LK-Q7 improves film integrity on the skin, helping maintain SPF performance even after exposure to water or perspiration.
    • Water resistant sunscreen creams
    • Long wear sunscreen lotions
  3. Color Cosmetics & Lip Products
    LK-Q7 enhances adhesion, wear time, and resistance in decorative cosmetics.
    • Foundations and complexion products
    • Long lasting color cosmetics
    • Lipsticks and lip color formulations
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