For clients
Eyelash serum for short, sparse lashes: InLei® Adiutrix
Short or sparse lashes and brows are one of the most common beauty frustrations. InLei® Adiutrix is a plant-based serum, made in Italy, designed to support longer, thicker and glossier lashes and brows at home.

Why Adiutrix was created
After InLei® launched the Lash Filler® salon treatment, clients asked for something to use at home between appointments. The brief for the lab was clear: high-quality ingredients, a safe formula, real effectiveness, and no adverse effects on the hair follicle. Adiutrix uses only ingredients permitted by the European Cosmetics Regulation.
What’s inside
Adiutrix combines two active complexes:
- Rebalancing complex, with mung bean sprouts and red clover, which supports the hair’s growth cycle so lashes grow longer and thicker.
- Volumising complex, with rice amino acids and fermented date extract, which moisturises the hair, smooths the surface and increases the thickness of each strand.
Fermented date extract is rich in vitamins B1, B2 and B6 and is emollient and moisturising. Rice water has been used for centuries to keep long hair strong and glossy.
Does it work?
InLei® tested Adiutrix on 20 volunteers using it morning and evening for at least 30 days, with visibly thicker lashes and brows as a result.

Before and after: two months of use.

Before and after: three months of use.
How to use it
- Start with clean lashes and brows. An oil-free InLei® mousse is ideal.
- Apply with gentle upward strokes along the lash line and through the brows.
- Let it dry naturally.
- Repeat morning and evening for 40 to 50 days.
The soft, dense brush coats every hair, so the serum absorbs properly.
Get the most from it
- Pair it with a lash lift or Lash Filler® treatment at a certified salon.
- Cleanse daily with oil-free Aloe Vera Mousse.
Shop InLei® Adiutrix or browse the full aftercare range.
Frequently asked questions
How long does Adiutrix take to work?
It was tested with morning and evening use for at least 30 days. For best results, use it continuously for 40 to 50 days.
Is Adiutrix safe for the eyes?
It is made only with ingredients permitted by the European Cosmetics Regulation and contains no medicinal ingredients that could harm the eyes.
Can I use it with Lash Filler®?
Yes. Used daily across three Lash Filler® treatments over three months, efficacy tests showed lashes 28% thicker and 12% longer.