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$9.99 MSRP
$39.96 MSRP
Part of the Fructis Hair Filler + Vitamin Cg Strength system.
This sulfate-free Hair Filler + Vitamin Cg Serum is formulated with vitamin Cg, citric acid, and repair care complex. This system fills weak, damaged hair with strength 7 layers deep for inner fiber repair, outer visible transformation. Use this serum as step 4 in the 4-step system.
Inner fiber repair: Repairs and strengthens broken bonds deep in the cortex, hair fiber's inner layer*. Outer visible transformation: Up to 79% more strength with up to 4x less breakage**. Get visibly smooth and healthy-looking hair.
Formulated without sulfates, parabens, phthalates, DMDM hydantoin, and mineral oil. All Garnier products, globally, are officially approved by Cruelty Free International under the Leaping Bunny Program.
*with continuous use of the system (Inner Fiber Repair Treatment and Strength Repair Shampoo, Conditioner, and Serum)
**with use of the system vs. non-conditioning shampoo
4-STEP STRENGTH HAIR REPAIR TREATMENT SYSTEM:
STEP 1: Apply Bonding Inner Fiber Repair Pre-Shampoo Treatment and leave on for 5 minutes. Rinse.
STEP 2: Apply Strength Repair Shampoo. Rinse.
STEP 3: Apply Strength Repair Conditioner to wet hair. Rinse.
STEP 4: Apply Strength Repair Serum. Do not rinse.
ISODODECANE • AQUA / WATER / EAU • DIPROPYLENE GLYCOL • DIMETHICONE • ALCOHOL DENAT. • DIMETHICONOL • GLYCERIN • PEG-14 DIMETHICONE • HYDROXYETHYL UREA • PHENOXYETHANOL • PARFUM / FRAGRANCE • PEG-60 HYDROGENATED CASTOR OIL • POLYACRYLAMIDE • C13-14 ISOALKANE • ASCORBYL GLUCOSIDE • PROPYLENE GLYCOL • LAURETH-7 • LINALOOL • LIMONENE • ARGININE • CITRIC ACID • BENZYL ALCOHOL • CITRONELLOL • METHYL 2-OCTYNOATE • COUMARIN • GERANIOL • PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE
Fill Hair With Strength 7 Layers Deep
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 works with the Strength Repair system to penetrate 7 layers deep and interact with ions in the cortex, restoring the broken electrostatic bonds that strengthen the hair fiber from within.*
*with continual use of Inner Fiber Repair Treatment


System for Inner Fiber Repair, Outer Visible Transformation
- INNER: Repairs and strengthens broken bonds deep in the cortex, hair fiber's inner layer*
- OUTER: Up to 79% more strength and 4x less breakage**
*with continuous use of system (Inner Fiber Repair Treatment and Strength Repair Shampoo, Conditioner, and Serum)
**with use of system vs. non-conditioning shampoo
Garnier Commits to Greener Beauty
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.
Recycled Plastic Bottle*
Bottle made of 100% recycled plastic.*
*excluding cap
Reviews
Average Customer Ratings
Filter Reviews
Very impressive product
Yes, I recommend this product.
Good but smells weird
Yes, I recommend this product.
Great!
Feels tacky on hair
It’s just okay
Very Moisturizing serum!!!
Good, but not great
Who knew hair serums were so cool
Questions
Q: I wash my hair daily. Can i use this daily?
6 months agoQ: I know this is the final step of my routine, but I’d like to know how often I can use it. Is it okay to use it every day, or should I only use it every time I wash my hair? Please let me know if yes or no 🙌
a year ago- A: Hi Gabydoesitall! Thank you for your interest in Hair Filler Strength Repair Serum. This formula is a leave in treatment, after shampooing and conditioning the serum is applied, do not rinse. 4-STEP STRENGTH HAIR REPAIR TREATMENT SYSTEM: STEP 1: Apply Bonding Inner Fiber Repair Pre-Shampoo Treatment and leave on for 5 minutes. Rinse. STEP 2: Apply Strength Repair Shampoo. Rinse. STEP 3: Apply Strength Repair Conditioner to wet hair. Rinse. STEP 4: Apply Strength Repair Serum. Do not rinse.a year agoHelpful?
Q: Can I use this with a heat protector? Should I use this & leave it in before going in with a heat protector?
a year ago- A: Hi Nice92! Thank you for inquiring about the order of use when using Fructis Hair Filler Strength Repair Serum. This is the final step in using the system, and should not be rinsed out. You can apply your heat protector, before using blow dryer, flat iron, etc.a year agoHelpful?
Q: Do it have DMDM in the hair products if so I'm not using it because it damages there that's probably what's wrong with my hair between that and a hard water
a year ago- A: Hello, The L'Oréal Group (Garnier), makes every effort to provide products of the finest quality. The ingredients we use are selected because of their record of safety for use by the consumer. We thank you for your interest in Garnier!a year agoHelpful?
Q: Is this safe for color treated hair
2 years ago- A: Hello Linette .,great question! The Hair Filler + Vitamin Cg Strength Repair Serum is safe for use on color treated hair...this sulfate-free Hair Filler + Vitamin system fills weak, damaged hair. All 4 steps in this 4-step system are safe for use on color treated hair!.2 years agoHelpful?
Q: My hair is 100% gray (white actually). Will this line of products work on gray hair? If not, do you recommend any of your products for thinning gray hair? Thanks.
2 years ago- A: Hey there Jezebellydancer . Thanks for reaching out about using the Hair Filler + Vitamin Cg Strength Repair Serum. This serum works best as the 4th part of the Hair Filler + Vitamin Cg system to strengthen and repair thin, weak hair of any color (or lack of color) . To thicken fine, thin hair, use the Grow Strong Thickening shampoo and conditioner.2 years agoHelpful?
Q: Should I blow dry after use
2 years ago- A: Hi mschuff, Thanks for reaching out! You do not need to blow dry your hair, unless blow drying your hair is part of your hair routine you may. We thank you for your interest in Garnier Hair Filler Serum.2 years agoHelpful?
Q: Does this serum act like a heat protectant if you’re using a flat iron on your hair or would I still need to add another product after this to protect it from styling tools?
2 years ago- A: Hi Jody17, Hair Filler + Vitamin Cg system is formulated with vitamin Cg, citric acid, and repair care complex, to fill weak, damaged hair with strength. This is not a heat protectant. We thank you for your interest in Garnier!2 years agoHelpful?
Q: Would this collection be suitable for very fine, thin hair that’s prone to oiliness at roots?
2 years ago- A: Hi MuzzyMoo, Thanks for reaching out! Hair Filler + Vitamin Cg Strength Repair Serum is formulated with vitamin Cg, citric acid, and repair care complex, to fill weak, damaged hair with strength. We see no reason why you cannot try this on fine oily hair. Thanks for your interest in Garnier!2 years agoHelpful?
Q: How much of the product should I be using (dime-size, quarter, etc)? Also, is it applied from roots to ends, or more to just the ends? There are no instructions!!
2 years ago- A: I would avoid the root area as you shouldn’t need bond filler yet to that part of the hair shaft and it will likely make your scalp oily. Start with dime size for chin to shoulder length thin hair, adding more for thickness and length. And as you see fit. Back off if you notice oiliness.2 months agoHelpful?



















