Garnier Fructis Hair Filler Strength Repair Serum 3.8 fl oz — leave-in Vitamin Cg, reduces breakage

Garnier Fructis Hair Filler Strength Repair Serum is a leave-in, sulfate-free treatment that helps reinforce weak, damaged hair using Vitamin Cg, citric acid, and a Repair Care Complex.

This lightweight serum is designed as the finishing step in Garnier's Hair Filler + Vitamin Cg system to strengthen hair from the inside out and smooth visible surface damage. Used after the pre-shampoo treatment, shampoo and conditioner in the system, the serum targets split ends and fragile lengths to reduce breakage and improve manageability without heavy residue.

How does this serum strengthen hair without weighing it down?

The formula combines Vitamin Cg and citric acid with a Repair Care Complex to support the hair fiber and smooth the cuticle. It’s a leave-in serum, so it sits on the strand and absorbs without creating buildup, leaving hair soft and touchable.

• Lightweight emulsion that absorbs quickly
• Sulfate-free and free of parabens, phthalates, mineral oil
• Designed to be the last step in a 4-step repair system

What visible benefits will I see after regular use?

With continued use as part of the full Hair Filler system, users report stronger-feeling hair and fewer breakage points. The serum helps smooth the hair surface, improving shine and reducing the appearance of split ends.

• Up to 4x stronger hair reported in system tests
• Reduced breakage and fewer visible split ends
• Smoother, healthier-looking lengths and improved manageability

How do I use the Garnier Fructis Strength Repair Serum correctly?

Use this product as the last step in the Hair Filler routine: after pre-shampoo treatment, shampoo and conditioner. Apply a small amount to damp or towel-dried lengths and ends and leave it in—do not rinse.

• Apply after conditioning on damp hair
• Use sparingly on ends and mid-lengths to avoid oily roots
• Pair with Fructis Hair Filler pre-shampoo, shampoo and conditioner for best results

Is this serum suitable for my hair type and concerns?

The serum is formulated for weak, damaged hair and works on chemically treated, heat-styled, or naturally brittle hair. Its vegan formulation and Leaping Bunny certification make it a cruelty-free option for those avoiding animal-derived ingredients.

• Best for weak, damaged, or split-end-prone hair
• Safe for color-treated hair as part of the full system
• Formulated without sulfates, parabens, phthalates, DMDM Hydantoin, and mineral oil

Who is this for: This serum is for anyone looking to reduce breakage and improve the look and feel of damaged hair—especially people who use heat tools, color their hair, or experience frequent split ends. It’s ideal for those who prefer lightweight, leave-in treatments and want a cruelty-free, vegan formula that complements an intensive, multi-step repair routine.

Ingredients

1041809 FS2 - INGREDIENTS: 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 (F.I.L. T70029383/1).