L'Oréal Professionnel Paris Pro Longer Thickening Conditioner for Thin & Fine Hair — Reduces Split Ends, Adds Volume & Shine

L'Oréal Professionnel Pro Longer Thickening Conditioner is a salon-formulated rinse-out conditioner designed to thicken hair fiber, reduce the visible appearance of split ends, and add volume and shine to long, fine or thinning ends.

This professional conditioner targets long hair that shows thinning at the ends by combining a patented Filler A-100 molecule with amino acids to refill and strengthen the hair shaft. The formula aims to refresh lengths, improve texture and boost manageability after shampooing. Use it as part of the Pro Longer routine—including the matching shampoo and mask—for cumulative benefits over time.

How does this conditioner reduce the appearance of split ends?

The formula contains Filler A-100, a high-concentration filling molecule designed to adhere to and resurface weakened fiber at the ends. Amino acids in the blend help strengthen and reinforce the hair cortex, improving the look of damaged tips without heavy buildup.

• Fills and smooths rough, thinned ends for a cleaner-looking finish
• Amino acids support fiber strength and resilience
• Rinse-out texture avoids weighing down fine hair
• Clinically shown reduction in visible split ends when used as directed*

Will this conditioner add volume to fine or thin hair?

Yes—this conditioner is formulated to boost lift and body while preserving softness. Rather than using heavy oils, it relies on structural fillers and lightweight conditioning agents to increase strand diameter and overall volume.

• Delivers fuller-looking lengths without greasy residue
• Gives up to 64% more volume when used with the Pro Longer system*
• Improves texture so styling holds better and appears thicker
• Suitable for fine hair that needs body but not weight

How should I use Pro Longer Thickening Conditioner for best results?

Apply to clean, damp hair after shampooing, focusing on mid-lengths and ends. For extra nourishment, distribute evenly and leave on for 1–2 minutes before rinsing; otherwise rinse immediately after application.

• Use after Pro Longer Shampoo for consistent results
• Apply evenly on towel-dried hair along lengths and ends
• For deeper renewal, leave on 1–2 minutes; then rinse thoroughly
• Combine with Pro Longer Mask once or twice weekly for intensive care

Is this conditioner safe for colored or chemically treated hair?

The gentle formulation is compatible with color-treated and chemically processed hair, aiming to strengthen and refresh lengths without stripping color. It focuses on fiber repair and lightweight conditioning rather than aggressive detergents or heavy oils.

• Suitable for color-treated lengths when used as part of a salon-grade routine
• Helps protect against further breakage and improves appearance of ends
• Non-greasy finish preserves color vibrancy and manageability
• Best results when paired with other Pro Longer professional products

Who is this for: L'Oréal Professionnel Pro Longer Thickening Conditioner is intended for people with long hair that shows thinning, breakage or visibly damaged ends—especially fine or thin hair types seeking renewed body, smoother lengths and a healthier-looking finish. It works well for anyone wanting a lightweight, professional conditioner to support growth appearance and improve manageability as part of a targeted haircare routine.

Note: Percentages referenced in product claims are based on the brand's clinical testing when used as directed with other Pro Longer products.

Ingredients

Aqua / Water / Eau, Hydroxypropyl Starch Phosphate, Quaternium-87, Stearyl Alcohol, Behentrimonium Chloride, Propylene Glycol, Amodimethicone, Phenoxyethanol, Isopropyl Alcohol, Candelilla Cera / Candelilla Wax / Cire De Candelilla, Methylparaben, Trideceth-5, Glycerin, Arginine, Panthenol, Trideceth-10, Lactic Acid, Benzyl Salicylate, Chlorhexidine Dihydrochloride, Benzyl Alcohol, Linalool, Limonene, 2-Oleamido-1,3-Octadecanediol, Aminopropyl Triethoxysilane, Hydroxycitronellal, Citronellol, Acetic Acid, Polyquaternium-6, Parfum / Fragrance. C241154/1.