Lash Filler 25.9 Molecular Reconstruction sachets

Leave on - no rinse gel
Enhances the effect of the Lash Filler system
Hydrating to help keep the hairs soft and silky
Re-balances the hair structure ensuring lashes stay healthy
Professional use only

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InLei® Molecular 4 - molecular reconstruction for eyelashes and eyebrows. 


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

How do these proteins act exactly?

Components with a higher molecular weight form a film on the lash shaft that lubricates and strengthens the cuticle. 

Components with a lower molecular weight penetrate the cortex, moisturising the lashes and making them more elastic. In addition, the product contains and innovative type of Hyaluronic Acid, which binds to the hair in a stable way and provides excellent hydration, thus making the hair very soft and silky. 


Lash Molecular 4 contains:


Hydroxypropyltrimonium Hyaluronate:

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



  • A complete protein which contains all 8 essential amino acids to strengthen hair structure and increase the shine of eyelashes. 
  • Boosts colour absorption to guarantee a more intense and lasting shade, preserving pigment and colour brightness for longer. 
  • Improves hair structure with strength and firmness. 
  • Increases the shine of eyelashes and gives them 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. 
  • They 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 the hair damage - physical eyelash damage (curler, rubbing on pillow) or chemical damage (aggressive dyes, bleaching). 

  • Its low molecular weight components penetrate the cuticle to strengthen the hair from the inside, increasing resistance against damage. 
  • While its high molecular weight components form a protective film that strengthens, lubricates, and protects the surface of the hairs. 



InLei® Lash Filler 25.9 – Instructions:

  • Analyse client’s eyes and natural eyelashes to be able to choose the correct shields for the desired effect.
  • Thoroughly cleanse the client's eyelashes area with InLei® Mousse Oil Free (for example InLei® Mousse Aloe Vera). For convenience use InLei Fernando Multipurpose brush. Remove the mousse with a drop of water or a damp cotton pad.
  • Prepare the eyelashes with InLei® Saline Solution using InLei®Minions - microbrush.
  • Apply InLei® InPatch or InLei® Black Reusable Pad eyepatches to secure lower lashes and protect the skin under the eyes.
  • Place a selected size of the InLei® Silicone Shields on the clients eyelids and if necessary secure the shield with InLei® Fixing Gel.
  • Align the eyelashes in the desired direction using InLei® Fixing Gel, InLei® Fillering Tool and InLei® Helper or Helper 2.0.
  • Apply InLei® Lash Form1 (first substance) 1.5 / 2 mm from the roots of the lashes using InLei® Vincent cat-tongue brush. Place a thin layer of product without applying it on the tips. Leave on for 6 to 14+ minutes depending on the structure and porosity of the hairs. 
  • Remove the product with with InLei® Vincent brush.
  • APPLY InLei® Lash Fix 2 (second substance) following the same procedure as the previous one and leave on for half the time plus one minute. (For example, if Form 1 was left for 8 minutes, you would leave Fix 2 for 5 minutes).
  • Remove the product with with InLei® Vincent brush.
  • Mix the InLei® Tint with InLei® Developer Cream 1.5% 5 vol. in a ratio of 1:1 inside the InLei® Trio bowl. Mix with a spatula until reaching a creamy consistency. Apply the tint along the entire length of the lashes, from root to tip, using InLei® Vincent or Picasso brush. Leave on for 6 to 12 minutes depending on the type of hair. The dyeing of the lower lashes can be done at this time or at the end of the treatment with the client sitting.
  • Remove the tint with dry cotton tips.
  • Apply InLei® Lash Filler 3 (third substance) using InLei® Picasso and do quick movements to clean any tint residue. Let the product penetrate until complete absorption. For an even more precise and clean work, it is advisable to brush the roots with an InLei® Softies microfibre-tip brush, soaked in InLei® Lash Filler 3.
  • Final cleaning with InLei® Mousse Magica - professional eyelash shampoo. Fill the InLei® Barolo bowl with water and dispense the mousse into the InLei® Solo bowl. Wet the brush and use it to pick up a small amount of product. Meticulously clean any dye residue and dissolve the water-soluble glue until the shield unsticks. Clean the entire eyelid with the brush to remove all residues of glue and comb the lashes with an InLei® F-brush to divide the hairs to one another. NOTE: To obtain the correct consistency of the mousse, it is recommended to shake the bottle and turn it upside down during dispensing.
  • Apply InLei® Lash Molecular 4 - Molecular reconstruction for eyelashes and eyebrows. Apply the product on all lashes using an InLei® F-brush and comb until it is completely absorbed. The molecular reconstruction is a leave-on product. 


By using the InLei® Adiutrix serum daily during a three-treatment cycle over three months, we obtain a thickening of 28% and a lengthening of 12%. Data proven by efficacy tests.



Product Code 31335- EACH

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