Kérastase Première Serum: Frizz Control & Damage Repair Hair Serum. Silver bottle of Fondamental 90ml, shop at Partners Hair Design.

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Kérastase Premiere Serum Filler: Repairing Anti-Frizz Hair Serum 90ml for Damaged Hair

Kérastase Première Sérum Filler Fondamental Decalcifying Repair Hair Serum 90ml

Name: Kérastase Première Sérum Filler Fondamental Decalcifying Repair Hair Serum 90ml
Brand: Kérastase
Price: 1000.0 ZAR
Availability: InStock

R 1,000.00

A leave-in anti-breakage filler serum for damaged hair that helps repair and smooth the fibre while protecting against frizz and improving softness, shine and resilience.

Good forDamaged Breakage Weak Hair PorousDullFrizzy

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Kérastase Première Sérum Filler Fondamental Decalcifying Repair Hair Serum 90ml

R 1,000.00

Kérastase Première Sérum Filler Fondamental is a lightweight leave-in repair serum for all hair types. It repairs surface damage and tames frizz while smoothing the cuticle — for softer, more manageable hair with a sleek, polished finish and no weight.

Benefits

Repairs surface damage — reinforces the fibre against daily styling stress.
Tames frizz — smooths the cuticle for a sleek finish.
Easy manageability — improves detangling and styling ease.
Lightweight — absorbs fast without weighing hair down.

How to use

After washing, apply 1–2 pumps to towel-dried hair, mid-lengths to ends.
Distribute with fingers or a wide-tooth comb.
Style as usual. Do not rinse.

Who it's for

Best for damaged or frizz-prone hair that needs lightweight repair and smoothness. Learn how to repair damaged hair, browse anti-frizz serums and oils, or explore the full Kérastase range.

Specifications

Brand: Kérastase
Size: 90ml
Format: Serum
Hair concerns: Damaged, Breakage, Weak Hair, Porous, Dull, Frizzy
Suitable for: All hair types,Damaged,Frizzy,Fine,Thick,Curly,Straight
Key ingredients: Water
Finish: Shiny
Good to know: Sulphate-free

Authorised Kérastase stockist

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Professional guidance, honest answers and the details that matter.

Why our stylists rate it

From the Partners Hair team

Kérastase Première Sérum Filler Fondamental is a lightweight leave-in heat-protecting serum for all types of damaged hair. Part of the Kérastase Première range. Smooths, fills, and protects against humidity, frizz, and heat damage up to 230°C / 450°F — the finishing leave-in step in the Première routine.

Best for: damaged, frizz-prone hair that gets heat-styled regularly; over-processed, bleached, or chemically-treated hair needing daily leave-in protection; hair exposed to humidity (Cape Town summers especially); the leave-in step in the Première routine after Concentré + Bain + Fondant/Masque; pre-blow-dry primer for hard-water damaged hair.
Less suited to: damaged hair where structural breakage is the priority over calcium (use Resistance Ciment Thermique or Sérum Thérapiste); blonde hair where colour-care heat protection is priority (use Blond Absolu Cicaplasme Thermique); curly hair where curl-definition is priority (use Curl Manifesto Crème de Jour Fondamentale); aging hair where revitalisation is priority (use Chronologiste Thermique Régénérant).

Key actives:
- Glycine — amino acid that penetrates the cortex and continues internal repair from the Première cleansing layers
- Peptide — chain of amino acids that fills the hair surface, smoothing damage and adding substance
- Hydrolyzed Vegetable Protein PG-Propyl Silanetriol — conditioning protein for fibre reinforcement
- Amodimethicone + Dimethicone — conditioning silicones that form a smooth heat-protective coating; help repel humidity
- Isopropyl Myristate — lightweight emollient that conditions without weight

Benefits:
- Heat protection up to 230°C / 450°F against blow-drying and hot tools
- 99% stronger hair (Kérastase instrumental test, vs non-conditioning shampoo)
- 85% shinier hair (vs unwashed hair)
- 3x smoother hair — repels humidity and locks out frizz
- Visibly reduces the appearance of split ends
- Lightweight texture — absorbs quickly, doesn't weigh hair down

How to use: Apply 1–2 pipettes to damp or dry hair, focusing on mid-lengths and ends. Comb through to distribute. Do not rinse. Blow-dry and heat-style as desired. Pro tip: layer Huile Gloss Réparatrice on top for extra shine and split-end smoothing.

Format: 90ml leave-in serum.

Authorised Kérastase stockist — 100% authentic, sourced from the official South African distributor. Free delivery on orders over R390 across South Africa.

Delivery without the guesswork

Spend R390 and delivery is on us. Orders under R390 are delivered for R67. We normally pack within 1 working day, with delivery in 2–5 working days depending on your location.

Changed your mind? You have 7 days after receiving your order to request a return. Email hello@partnershair.co.za to get started.

Why shop it at Partners Hair

Professional haircare is only as good as the source. We buy through official South African distribution, so every item is genuine, authorised stock.

Behind the store are 250+ working stylists across 24 Cape Town salons. Need help choosing? Visit Ask the Experts for real advice from the salon floor.