Transform Your Scalp Health with Advanced Microbiome Science

Is your scalp feeling dry, itchy, or excessively oily? A healthy head of hair starts at the roots. The Kérastase Specifique Potentialiste Hair & Scalp Serum (90ml) is a revolutionary, universal defense serum specifically formulated to treat and revitalize unbalanced scalps. Powered by advanced microbiome science, this fast-absorbing gel serum instantly soothes discomfort, hydrates deeply, and creates the optimal environment for strong, beautiful hair.

Whether you struggle with sensitivity, dandruff, or a lack of volume at the roots, this lightweight, daily-use treatment works to balance your scalp's natural flora, leaving it feeling refreshed, protected, and incredibly healthy.

Key Benefits
  • Instant Soothing Relief: Alleviates the feeling of a tight, dry, or itchy scalp with an immediate and long-lasting cooling effect.
  • Microbiome Recovery: Balances the scalp's ecosystem to foster faster recovery of the natural protective barrier.
  • Root Lift & Hair Vitality: Revitalizes the scalp and provides a visible lifting effect at the roots, making strands look fuller and more energized.
  • Lightweight Hydration: The fast-absorbing, non-greasy gel texture deeply moisturizes without weighing down your hair or leaving a residue.
  • Antioxidant Protection: Shields the scalp and hair roots from environmental stressors and daily oxidative damage.
  • Sensorial Experience: Leaves behind a beautifully clean, long-lasting fragrance.
Star Ingredients
  • 10% Bifidus Prebiotic Fractions: The ultimate food for your scalp. These powerful prebiotics nourish good bacteria, strengthening the scalp's microbiome against daily external aggressors and maintaining a robust protective barrier.
  • 1% Vitamin C Derivative: A potent antioxidant that neutralizes free radicals, prevents root oxidation, and protects hair vitality and color from fading.
  • Glycerin & Menthol: Draws moisture into the scalp for lasting hydration while providing a gentle, stimulating cooling sensation.
Who It’s For

This universal serum is safe and highly effective for all hair types. It is specifically recommended for those experiencing an unbalanced scalp—including normal, dry, sensitive, or oily scalps.

How to Use

For optimal results, use the serum once a day (either in the morning or before bedtime) as a 3-week intensive treatment or as part of your regular routine.

  1. Start with a clean, dry, or towel-dried scalp.
  2. Part your hair into sections to expose the scalp.
  3. Apply 3 doses of the serum evenly across the scalp. (Note: 1 dose = 1 pipette filled to the indicated mark).
  4. Gently massage the product into the scalp using circular motions with your fingertips to boost microcirculation and absorption.
  5. Do not rinse. Style your hair as usual.

(Pro Tip: Keep the bottle in the refrigerator for an extra-soothing, enhanced cooling effect upon application!)

Specifications

Brand
Kérastase
Size
90ml
Format
Serum
Hair concerns
Sensitive Scalp, Itchy Scalp, Dry Scalp, Oily, Dandruff
Suitable for
All hair types,Fine,Thick
Finish
Shiny

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Why our stylists rate it
From the Partners Hair team
Kérastase Spécifique Potentialiste is a universal defense serum for unbalanced scalps. Part of the Kérastase Spécifique scalp-care range. Lightweight, fast-absorbing gel-serum powered by microbiome science — designed to be used daily by any scalp type (dry, sensitive, oily, or normal) to maintain barrier health, balance, and resilience.

Best for: any scalp type showing signs of imbalance (sensitivity, occasional oiliness, dryness, dullness); daily scalp-care use as a foundational defense step regardless of which Kérastase regimen you use on lengths; protecting the scalp against external aggressors (pollution, UV, hard water, heat styling); the leave-in scalp step in a Spécifique routine, layered under any Kérastase shampoo and conditioner.
Less suited to: visibly thinning hair where density is the primary goal (use Densifique — Cure Densifique vials or scalp ampoules); active dandruff or flaking scalp (use Kérastase Symbiose — Micro-Peeling Cellulaire and Bain Crème Anti-Pelliculaire); severely irritated scalp needing deep soothing treatment (use Spécifique Masque Hydra-Apaisant for weekly intensive care); hair-shaft repair (use Resistance or Première ranges — this is a scalp product, not a fibre treatment).

Key actives:
- Bifidus Prebiotics (Bifida Ferment Lysate) — microbiome-balancing ferment; nourishes the scalp's beneficial bacteria to maintain a strong, healthy barrier
- Vitamin C (Ascorbyl Glucoside) — stable Vitamin C derivative; antioxidant that neutralises oxidative stress from pollution and UV
- Mannose + Alpha-Glucan Oligosaccharide — prebiotic sugars that support healthy scalp flora
- Polymnia Sonchifolia (Yacon) Root Juice — prebiotic-rich plant extract
- Lactobacillus + Yeast Extract — additional microbiome-support ferments

Benefits:
- Reinforces and protects the scalp barrier against daily aggressors
- Rebalances scalps prone to sensitivity, oiliness, or dryness
- Fast-absorbing gel-serum texture — immediate cooling comfort, no residue
- Lifts and revitalises the roots
- Leaves the scalp feeling fresh, hydrated, and less reactive
- Hair feels healthier and more beautiful with consistent use

How to use: After washing, apply 3 doses (1 dose = 1 pipette pump to the marked line) directly onto the scalp, section by section. Massage gently with fingertips. Do not rinse. Style as usual. For best results use daily as a 3-week intensive course, then maintain as needed. The serum may yellow over time — this does not affect performance.

Format: 90ml leave-in scalp 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.

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