Give Your Damaged Hair Our Deepest Repair
Reverse up to 1 year of damage to hair smoothness in one use.
Discover Hair Filler
Hair Filler + Polypeptides
Get up to 2X less hair fall* due to breakage** for weak, thin hair
SHOP NOW**From brushing vs. non-conditioning shampoo
***With System (Inner Fiber Repair Treatment & Strength Repair Shampoo, Conditioner, & Serum) vs. non-conditioning shampoo
****With System (Inner Fiber Repair Treatment & Moisture Repair Shampoo, Conditioner, & Serum) vs. non-conditioning shampoo

Inner Fiber Repair, Outer Visible Transformation
- Our hair is made up of two main parts: the outermost cuticle which is made up of 6 layers of overlapping scales, and the inner cortex.
- The Inner Fiber Repair Treatment penetrates 7 layers deep to strengthen the hair fiber from within.*
- Outer visible transformation: Strong, smooth, soft, and healthy-looking hair with Hair Filler system of Inner Fiber Repair Treatment, shampoo, conditioner, and serum of your choice.
*Repair and strengthen broken bonds inside the hair fiber with continuous use of system
FREQUENTLY ASKED QUESTIONS
What are hair bonds?
Deep inside every hair strand, keratin fibers are held together by strong bonds (disulfide bonds) and weak bonds. These bonds give the hair fiber its structure, strength, and resilience.
What are the main causes of damage to hair?
There are many factors that can cause damage to the hair fiber. These factors include heat styling, mechanical styling, coloration and chemical treatments, and environmental exposures like UV light. The damage they cause can be surface “outer level”, impacting the look and feel of the hair cuticle, as well as at “inner level”, impacting the inner protein structure of the hair fiber and its strength.
How does the Hair Filler + Bonding Inner Fiber Repair Treatment work?
Our Hair Filler + Bonding Inner Fiber Repair Treatment contains a potent and active level of citric acid that repairs and strengthens weak hair bonds deep inside the hair fiber. The result? When combined with each Hair Filler System, get inner fiber repair and stronger, softer, and shinier hair.
Why do I need to use the Hair Filler + Bonding Inner Fiber Repair Treatment?
Traditional hair care products only work on the surface of the hair. The Hair Filler + Bonding Inner Fiber Repair Treatment when used with Hair Filler shampoo, conditioner, and serum of your choice, targets both internal and external damage to the hair fiber to improve strength, color vibrancy, or moisture.
How do I use the Hair Filler + Bonding Inner Fiber Repair Treatment?
Before shampooing, apply the Hair Filler + Bonding Inner Fiber Repair Treatment to wet hair and leave on for 5 minutes. Rinse and follow with the Hair Filler System that best suits your hair's needs.
How do you determine what system is best for your hair?
All of the Fructis hair filler systems are hair bonding systems that repair damaged hair. In addition, each system is formulated to target a specific hair concern:
1. Hair Filler + Vitamin Cg is for strengthening damaged hair
2. Hair Filler + Polypeptides volumizes thin, weak hair
Browse the hair filler systems and take our hair care quiz to test your knowledge and learn all about Fructis hair fillers!
1. Hair Filler + Vitamin Cg is for strengthening damaged hair
2. Hair Filler + Polypeptides volumizes thin, weak hair
Browse the hair filler systems and take our hair care quiz to test your knowledge and learn all about Fructis hair fillers!
Is Citric Acid safe for my hair?
Citric Acid is an ingredient that is commonly used in haircare and skincare. As a company committed to the highest quality products, we take special care to ensure that all ingredients we use are safe and continually evaluate the latest information and research about our ingredients.
Garnier Commits to Greener Beauty
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Cruelty Free Products
All Garnier products are approved by Cruelty Free International under the Leaping Bunny Program. -
99% Vegan Ingredients
99% of the ingredients in Garnier’s products are vegan and not derived from animals. -
Renewable Energy Goal
By 2025, all electricity & gas usage in our plants and distribution centers will be carbon neutral.