Kérastase Genesis Défense Thermique is a fortifying heat-protecting blow-dry primer for hair prone to breakage. Strengthened with Ginger Root and Edelweiss native cells, it shields hair from heat up to 220°C — turning a common cause of breakage into a strengthening step.

Benefits
  • Heat protection — guards against heat damage up to 220°C during blow-drying.
  • Strengthens while styling — reinforces the fibre against styling stress.
  • Controls frizz — tames flyaways for a smoother blow-dry.
  • Lightweight finish — protects without weighing hair down.
How to use
  1. On towel-dried, damp hair, distribute evenly from mid-lengths to ends.
  2. Comb through.
  3. Blow-dry and style as usual. Use before every blow-dry.
Who it's for

For weakened, breakage-prone hair that's regularly styled with heat. Learn how thermal protection works in our heat protection guide, or explore the full Kérastase range.

Specifications

Brand
Kérastase
Size
150ml
Format
Spray
Hair concerns
Hair Loss, Breakage, Weak Hair
Suitable for
All hair types,Fine,Thick
Finish
Shiny
Good to know
Heat protection

Authorised Kérastase stockist

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Why our stylists rate it
From the Partners Hair team
Kérastase Genesis Défense Thermique is a fortifying heat-protecting blow-dry primer for all hair types prone to falling due to breakage. Part of the Kérastase Genesis anti hair-fall range. Protects against heat damage while strengthening during styling.

Best for: anyone who blow-dries or heat-styles; fine, medium or thick hair needing heat protection without heaviness.
Less suited to: scalp or follicle-related hair loss (see Kérastase Spécifique).

Key actives:
- Heat-defense complex — shields hair during blow-drying, protects up to 220°C
- Ginger Root and Edelweiss Native Cells — fortify the fibre
- Friction-reducing coating — improves glide, reduces pull and tangles

Benefits:
- Protects against heat damage, a common cause of breakage
- Strengthens hair during styling
- Controls frizz and flyaways
- Smooths for shine and easier blow-drying

How to use: On towel-dried (damp) hair, distribute evenly from mid-lengths to ends. Comb through, then blow-dry and style as usual. Use before every blow-dry.

Format: 150ml leave-in blow-dry primer.

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

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Authorised products sourced through official South African distribution.