Serum Extentioniste Kerastase Boutique Deauville
Serum Extentioniste Kerastase Boutique Deauville
Serum Extentioniste Kerastase Boutique Deauville
Serum Extentioniste Kerastase Boutique Deauville
Serum Extentioniste Kerastase Boutique Deauville

Serum Extentioniste

Regular price$55.00 USD
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Shipping calculated at checkout.
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Size
  • In stock, ready to ship
  • Authorized Kerastase Retailer
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Due to the Canada Post strike, we're shipping with alternative carriers to ensure all packages arrive on time.

Kérastase Serum Extentioniste is a strengthening hair serum that helps to promote healthy hair growth and prevent breakage.

Hair type

Ideal for all hair types, especially those with long hair that is prone to breakage.

Hair texture

Suitable for all hair textures, from fine to thick.

Hair concerns

Addresses hair breakage, split ends, and lack of hair growth in long hair.

Key benefits
  • Strengthens and fortifies hair to prevent breakage
  • Promotes healthy hair growth
  • Improves hair elasticity and resilience
  • Leaves hair feeling soft, shiny, and manageable
Ingredients
  • Creatine R: Strengthens and protects the hair fiber from within.
  • Taurine: Protects hair from environmental damage and promotes a healthy scalp.
  • Ceramides: Smooths and strengthens the hair cuticle for a healthy, shiny finish.
How to use

Apply Kérastase Serum Extentioniste to clean, towel-dried hair. Divide hair into sections and apply 2-3 drops of serum to each section, focusing on the lengths and ends. Gently massage the serum into the hair and do not rinse. Style as usual. Use 2-3 times per week for best results.

We understand the importance of using genuine beauty products. That's why we're proud to be an authorized retailer for all the brands we carry. When you shop with us, you can be sure you're getting fresh, authentic products delivered directly from the brands themselves.

Why Choose Authorized Retailers?

Unfortunately, counterfeit and expired products are a real concern online. Shopping with unauthorized sellers puts you at risk of receiving ineffective or even harmful cosmetics.

Here's why Boutique Deauville is your trusted source for beauty essentials:

  • Guaranteed Authenticity: We source directly from brands, ensuring you receive only genuine products.
  • Fresh Inventory: Regular shipments mean you get the latest formulations with optimal shelf life.
  • Safe & Effective: Avoid the risks associated with counterfeit or expired cosmetics.

Please note: due to the Canada Post strike, we are using alternative carriers.

Deliveries of our packages are made without a signature. During checkout, you can add a signature for $5 if your order is less than $299. Orders $299+ will all be shipped with a Signature Included.

  • All orders are shipped using UPS or Canada Post
  • Orders will be processed within 1-2 business days, Monday to Friday.
  • Shipping can take up to 7 business days to receive depending on your location.
  • You will be notified within 24 hours of any order issues that may occur

Peak Times Disclaimer:

  • During peak times like Holidays and promotions such as Black Friday and Boxing Day, due to high order volume, your items may take longer.

If you entered your address incorrectly when making your order, we are not liable. Don't forget to enter the right shipping information!

If you have any questions, don't hesitate to contact us by email or the chat bubble in the right corner. We'll get back to you right away

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Customer Reviews

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J
Jasmine H.
Save your money

This is a pretty expensive scalp treatment. I did not see any difference, that usually takes time... there is' I think, cheaper options available.