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INLEI® – Lash Filler 25.9 Molecular 4 in sachets (9 in a package)

Molecular reconstruction for eyelashes and eyebrows


Introducing InLei® Molecular 4 – molecular reconstruction for eyelashes and eyebrows.

It is a no-rinse gel designed to enhance the beneficial effects of the previous solutions of the Lash Filler 25.9 system. Its formulation, based on perfectly balanced proteins of vegetable origin, rebalances the hair structure, enhancing it in all aspects: shine, strength, color retention, firmness, and flexibility.

How do these proteins act exactly?

  • Components with a higher molecular weight form a film on the lash shaft, lubricating and strengthening the cuticle.
  • Components with a lower molecular weight penetrate the cortex, moisturizing the lashes and making them more elastic.

Additionally, the product contains an innovative type of Hyaluronic Acid, which binds to the hair in a stable way, providing excellent hydration and making the hair very soft and silky.

InLei® Molecular 4 contains:

Hydroxypropyltrimonium Hyaluronate:

  • An advanced version of Hyaluronic Acid, specifically developed to adhere to the surface of the lashes and brows.
  • Capable of absorbing and retaining a significant amount of water, promoting excellent hydration and moisture retention.
  • Contributes to a smoother and shinier hair texture.


  • A complete protein containing all 8 essential amino acids to strengthen hair structure and increase the shine of eyelashes.
  • Boosts color absorption, guaranteeing a more intense and lasting shade, while preserving pigment and color brightness for longer.
  • Improves hair structure, providing strength and firmness, and giving eyelashes a healthy and bright look.

Hydrolyzed Wheat Proteins:

  • Penetrate the cortex of the hair to help retain moisture and increase hydration.
  • Improve hair texture and elasticity, making it easier to treat and softer to the touch.
  • Form a thin, protective barrier around the hairs to protect against environmental damage and heat exposure.

Hydrolyzed Vegetable Protein:

  • An advanced ingredient that incorporates patented technologies to effectively counteract hair damage, whether physical (eyelash curler, rubbing on a pillow) or chemical (aggressive dyes, bleaching).
  • Its low molecular weight components penetrate the cuticle to strengthen the hair from the inside, increasing resistance against damage.
  • Its high molecular weight components form a protective film that strengthens, lubricates, and protects the surface of the hairs.