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KERASTASE Genesis Defense Thermique Blow Dry Primer, 5.1 Fl Oz

  • Based on 3,652 reviews
Condition: New
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As low as $11 / mo
  • – 4-month term
  • – No impact on credit
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Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

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Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Monday, Mar 3
Order within 2 hours and 29 minutes
Available payment plans shown during checkout

Product Benefits: Detangling, Shine


Hair Type: Straight, Wavy, Curly, and Coily Hair


Material Type Free: Sulfate Free


Scent: Floral


Liquid Volume: 150 Milliliters


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 1.57 x 1.57 x 7.09 inches; 6.3 ounces


Item model number ‏ : ‎ E3244800


Manufacturer ‏ : ‎ Kerastase


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Best Heat Protectant and Detangler I Have Ever used
I bought this along with the rest of this particular haircare line, and I am so glad I did. Not only does it smell great, but it is also the best heat protectant and detangler I have ever used. After using my blow dryer or hot brush on it, my hair comes out looking smooth, shiny, and healthy. Plus, with the use of the other products, after only a few weeks, I have seen a major difference in the health of my hair. I have told so many people I know about this and have recommended to friends who have similar problems with breakage like me. ... show more
Reviewed in the United States on July 25, 2024 by Blair

  • mess soo nice
works so well and the fragrance of this product is so pleasant and works so well!
Reviewed in the United States on July 11, 2024 by lilia

  • Best product for those who blow dry often
Leaves your hair smooth and no frizz! The fragrance is also beautiful
Reviewed in the United States on June 11, 2024 by Geraldine

  • Great product
When my hairstylist told me to buy this I wasn't sure because I tried so many products that didn't work but I figured; Hey I'll get It from Amazon if it's not good and it doesn't do what it says on the bottle. I'll return it, sure enough it does exactly what it's suppose to.
Reviewed in the United States on August 12, 2024 by Elle Ka

  • Spray nozzle is aggressive
As others have noted the spray nozzle is very aggressive so I sprayed the product into my hands and applied it that way. A little went a long way and the smell was subtle and inoffensive. My hair was a bit stiff and weighed down after using.
Reviewed in the United States on April 29, 2024 by Tess Filling

  • Here's a secret for this product!
My hair is a bit long and easily breaks. This product is great for that AND it detangles quite well. Now when you get to the bottom and you can't get any more of that good stuff, here's what you do- add a little water! That's the ticket! It'll stretch it out the product a little and works great! You won't be sorry! Have a lovely day! ♥️ ... show more
Reviewed in the United States on August 9, 2024 by Kmomma

  • Literally best pre blow dry spray
This is literally my first review of literally anything I've ever bought on Amazon and I have been buying items weekly for years and years. I use Keratise shampoo and conditioner which is pretty good but did not blow me away enough to write a review on it. However, this spray on pre blow dry spray..is seriously amazing!!! My hair after blowdrying usually is pretty dry and doesnt look great until styled with hair curler etc. After blow drying, my hair was silk, shiny, smooth, and it did not AT ALL decrease the volume or weigh it down. I absolutely recommend this! Ive been a Amazon user for the past 15 years..this is my first review so let that speak for ya!! ... show more
Reviewed in the United States on January 14, 2024 by Sarah Smith

  • makes my hair nice but the scent is to strong.
makes my hair nice but the scent is too strong for me. if you have migraines and very sensitive to scented product, it will be difficult for you to handle this. but if you are not and you just wanted a smooth hair, this is for you.
Reviewed in the United States on January 25, 2024 by CherryPink

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