Description
Product Details
L’Oréal Professionnel Serie Expert Pro Longer Liquid Filler
Available Sizes: 15ml & 400ml
L’Oréal Professionnel Serie Expert Pro Longer Liquid Filler is a professional concentrated treatment designed specifically for long hair with thinning lengths and weakened ends. Powered by patented Filler A-100 Technology and strengthening Amino Acids, this advanced liquid treatment helps visibly plump the hair fibre, strengthen fragile lengths and reduce the appearance of thin, damaged ends.
The highly concentrated formula penetrates deep into the hair fibre where it targets areas most affected by thinning and breakage, leaving long hair stronger, healthier-looking and noticeably fuller from lengths to ends. It is the ideal intensive treatment to complement the complete Pro Longer professional haircare routine.
Advanced Filler A-100 Technology
Exclusive to L’Oréal Professionnel, Filler A-100 Technology penetrates weakened areas of the hair fibre to visibly thicken and reinforce lengths from within. Combined with strengthening Amino Acids, it helps protect the outer layer of the hair, improving resilience whilst reducing the appearance of thin, damaged ends.
Key Features
- Professional concentrated liquid filler treatment.
- Available in 15ml and 400ml.
- Designed for long hair with thinning lengths and ends.
- Powered by patented Filler A-100 Technology.
- Enriched with strengthening Amino Acids.
- Targets weakened areas of the hair fibre.
- Professional rinse-out treatment.
- Suitable for professional salon and home use.
Benefits
- Visibly plumps weakened hair lengths.
- Helps strengthen fragile hair fibres.
- Reduces the appearance of thin, damaged ends.
- Improves softness and manageability.
- Leaves hair feeling fuller and healthier.
- Enhances shine and overall hair condition.
- Complements the complete Pro Longer routine.
Specifications
- Product: L’Oréal Professionnel Serie Expert Pro Longer Liquid Filler.
- Available Sizes: 15ml & 400ml.
- Hair Type: Long hair with thinning lengths and weakened ends.
- Technology: Patented Filler A-100 Technology with Amino Acids.
- Formula: Professional concentrated liquid treatment.
- Application: Rinse-out treatment after shampooing.
- Suitable for professional salon and retail use.
Ideal For
- Long hair with thinning lengths.
- Hair prone to split ends.
- Fragile or weakened hair fibres.
- Maintaining healthy-looking long hair.
- Professional salon strengthening treatments.
- Home maintenance between salon visits.
Why Choose L’Oréal Professionnel Serie Expert Pro Longer Liquid Filler?
- Targets thinning lengths with concentrated professional care.
- Helps reinforce the hair fibre from within.
- Leaves long hair looking fuller and healthier.
- Works perfectly alongside the complete Pro Longer routine.
- Professional salon-quality treatment for long hair.
- Trusted professional haircare from L’Oréal Professionnel.
The Pro Longer Professional Routine
- Step 1: Cleanse with L’Oréal Professionnel Serie Expert Pro Longer Shampoo.
- Step 2: Apply Pro Longer Liquid Filler to towel-dried lengths and ends.
- Step 3: Layer Pro Longer Conditioner or Mask directly over the Liquid Filler without rinsing.
- Step 4: Rinse thoroughly.
- Step 5: Finish with Pro Longer Leave-In Cream before blow-drying.
Sustainability
- Serie Expert packaging is manufactured using up to 100% recycled plastic where applicable.
- Helps reduce the use of virgin plastic.
- Produced using CO₂-conscious manufacturing processes.
- Manufactured primarily in European production facilities.
- Industrial water recycling systems help reduce environmental impact.
Directions for Use:
- Shampoo the hair and gently towel dry.
- Apply the Liquid Filler evenly to the mid-lengths and ends, concentrating on the most damaged areas.
- Without rinsing, apply the Pro Longer Conditioner or Mask directly over the Liquid Filler.
- Leave on as directed for the conditioner or mask.
- Rinse thoroughly.
- Finish with the Pro Longer Leave-In Cream before styling.
Top Tip: For optimum results, use the Liquid Filler weekly as an intensive strengthening treatment. Layering the conditioner or mask directly over the Liquid Filler helps maximise the plumping effect on thinning lengths and leaves long hair looking noticeably fuller, stronger and healthier.










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