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Kerastase

Kérastase Resistance Bain Extentioniste
Price history

Price changes in the past 30 days

May 09, 2026 23.94 €
May 07, 2026 22.94 €
23.94 € 23.94 € 32.80 €
Sale 8.86 € (27.01%)
Tax included. 
Format 250ml
In stock

Kérastase Resistance Bain Extentioniste is a professional shampoo formulated to strengthen damaged lengths, reduce hair breakage, and promote healthy growth. It is suitable for those with long, sensitized, colored, or chemically treated hair that requires structural reinforcement.

What it is

A strengthening shampoo from Kérastase's Resistance Extentioniste line, designed to protect and extend the life of your hair lengths. It acts on the hair fiber from within, reducing fragility and breakage.

Who it's for

Suitable for those with long hair or who want to grow it, with damaged, weakened, colored, or frequently chemically treated lengths.

Benefits

  • Reduces hair breakage by up to 89%*
  • Strengthens the structure of the lengths
  • Promotes hair growth
  • Leaves hair soft and manageable
  • Suitable for daily use

*Results tested on hair treated with the complete Extentioniste routine.

Active Ingredients

  • Hyaluronic Acid – hydrates the hair fiber and maintains elasticity
  • Ceramide R – reconstructs and seals damaged cuticles
  • Vitamin B5 (Panthenol) – nourishes and strengthens the lengths
  • Green Tea Extract – antioxidant action, protects the scalp

How to use

  1. Apply to wet hair, distributing from roots to ends.
  2. Gently massage the scalp for a few minutes.
  3. Rinse thoroughly.
  4. Repeat if necessary.
  5. Follow with conditioner or mask from the Extentioniste line for optimal results.

Result

Stronger hair, less prone to breakage, with visibly healthier and shinier lengths from the very first applications. With continued use, growth is more even and ends are less frayed.

Complementary products

For a complete Extentioniste routine, combine this shampoo with:

FAQ

Can I use it every day?
Yes, the formula is gentle and suitable for daily use.

Does it also work on colored hair?
Yes, it is formulated for colored and chemically treated hair.

What is the difference between 250ml and 500ml?
The content is identical, only the size changes. The 500ml is more convenient for prolonged use.

Should it be used with other products from the line?
The best results are obtained with the complete Extentioniste routine, but it can also be used alone.

Is it suitable for fine hair?
Yes, the formula does not weigh hair down. It is suitable for all types of long hair or hair that tends to break.

Technical Details

  • Brand: Kérastase
  • Line: Resistance Extentioniste
  • Product type: Strengthening shampoo
  • Available sizes: 250ml, 500ml
  • Hair type: Long, damaged, colored, sensitized
  • Usage: Daily
  • Made in: France

PAYMENTS

Cash on delivery: cash on delivery, the courier does not accept bank checks, €3 additional for cash on delivery.

Bank transfer: we accept payment by bank transfer. After the order and preparation, you will receive the necessary bank transfer details. The order will be processed once the credit is received, which usually takes 1/2 working days.

Paypal: the credit card payment process is managed by PayPal. This payment method is protected and secure. Credit card data does not pass through our site but is managed directly by the PayPal service. After completing the procedure, you will be redirected to the Planethair.it website.

Credit card: the payment method is protected and secure. Credit card data does not pass through our site but is managed directly by the provider (Visa, MasterCard, American Express, Poste Pay, etc.).

Klarna: buy now and pay in 3 installments with no extra costs. Click here for more information.

Satispay: with Satispay you can transfer money to your contacts and pay in stores with the same simplicity and immediacy as a message on WhatsApp.

Scalapay: "Buy Now, Pay Later" payment method that allows you to split purchases into 3 or 4 convenient monthly installments, without additional interest, provided they are paid regularly.

Fermopoint is a service that allows you to collect your parcels at over 6,600 affiliated collection points throughout Italy.

It is a convenient and secure alternative to home delivery. You can select the collection point directly at checkout, by entering the chosen Fermopoint as the delivery address.

The parcel can be collected within 3 days of its arrival, during the opening hours of the selected point.

Fermopoints are physical commercial establishments such as:

  • Tobacconists
  • Bars
  • Newsagents
  • Neighborhood shops

For more information: www.fermopoint.it

🏠 Home Delivery

Shipments will be delivered directly to the address provided at the time of the order.

🚚 Couriers Used

Shipments are made via:

  • TNT
  • BRT
  • FEDEX