--- product_id: 79476829 title: "KERASTASE Fondant Extentioniste Length Strengthening Conditioner - Strengthens Damaged Hair Lengths, Seals Split Ends for Longer Hair, Detangles, With Amino Acids" price: "$108.94" currency: USD in_stock: true reviews_count: 13 url: https://www.desertcart.us/products/79476829-kerastase-fondant-extentioniste-length-strengthening-conditioner-strengthens-damaged-hair-lengths store_origin: US region: United States of America --- # Boosts shine & moisture Strengthens fragile hair Seals split ends KERASTASE Fondant Extentioniste Length Strengthening Conditioner - Strengthens Damaged Hair Lengths, Seals Split Ends for Longer Hair, Detangles, With Amino Acids **Price:** $108.94 **Availability:** ✅ In Stock ## Summary > 💫 Unlock your hair’s full potential with every wash! ## Quick Answers - **What is this?** KERASTASE Fondant Extentioniste Length Strengthening Conditioner - Strengthens Damaged Hair Lengths, Seals Split Ends for Longer Hair, Detangles, With Amino Acids - **How much does it cost?** $108.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/79476829-kerastase-fondant-extentioniste-length-strengthening-conditioner-strengthens-damaged-hair-lengths) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Salon-Grade Luxury:** Trusted by professionals, designed for millennial managers who demand both performance and prestige. - • **Powerful Repair Complex:** Creatine R and Ceramides work synergistically to rebuild and fortify damaged hair lengths. - • **Long-Lasting Nourishment:** Deep conditioning effect leaves hair feeling soft, healthy, and resilient all day. - • **Cuticle Sealing Technology:** Locks in moisture and protects hair from root to tip, preventing further damage. - • **Ultimate Detangling Experience:** Creamy formula effortlessly smooths knots for silky, manageable hair. ## Overview The Fondant Extentioniste Length Strengthening Conditioner is a professional-grade, deep conditioning treatment enriched with Creatine R and Ceramides. It targets fragile, damaged hair by detangling, sealing split ends, and enhancing shine and moisture retention. Ideal for those seeking longer, healthier hair, it works best when paired with the Resistance Extentioniste Shampoo and Therapist Hair Mask, delivering salon-quality results that visibly improve hair strength and manageability. ## Description Rebuild weak and damaged hair lengths while restoring the hair fiber. Resistance strengthens the hair to help repair the effects of heat styling and prevent hair breakage in over-processed hair Expert Formulas Creatine R: Reinforce hair fiber structure Ceramides: Strengthen hair, add shine & moisture Fusio-Dose Instant Transformation, Infinite Possibilities. In-Salon Service Make an appointment in your Kérastase salon for a personalized hair diagnosis. Supports healthy hair lengths Protects hair fiber from external aggressors Stimulates scalp Supports healthy hair lengths Easily detangles hair Seals split ends Strengthen & supports healthy hair lengths Easily detangles hair Seals split ends Less hair breakage from blow drying Supports healthy hair lengths & seals split ends Heat protectant with 450°F thermo-protection Supports healthy hair lengths Soothing texture for itchy scalp Essential nutrition for healthy hair What is the difference between Resistance Force Architecte, Extensioniste, and Therapiste? The main difference between these ranges is the level and type of hair damage. Resistance Extentioniste is ideal for slow growing, damaged hair lengths What is the key ingredient in the Resistance Extentioniste range? The key ingredient is Creatine R, an exclusive complex composed of Creatine an amino acid that reinforces the internal structure of the hair fiber. Is this product safe for color-treated hair? Yes, this product is safe for color-treated hair Extentioniste Shampoo Extentioniste Conditioner Extentioniste Mask Extentioniste Thermique Extentioniste Serum is a leading global luxury professional haircare brand. Born in Paris in 1964, the brand has built its reputation on delivering on scalp and hair through exquisite products and personalized, in-salon treatments, all powered by . Kérastase adopts a to care for and all individuals, as well as the world we live in. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07D3T1LML | | Best Sellers Rank | #706 in Hair Conditioner | | Is Discontinued By Manufacturer | No | | Item Model Number | 905-12918 | | Manufacturer | Kerastase | ## Images ![KERASTASE Fondant Extentioniste Length Strengthening Conditioner - Strengthens Damaged Hair Lengths, Seals Split Ends for Longer Hair, Detangles, With Amino Acids - Image 1](https://m.media-amazon.com/images/I/618eQAzWaWL.jpg) ## Questions & Answers **Q: What is the difference between Resistance Force Architecte, Extensioniste, and Therapiste?** A: The main difference between these ranges is the level and type of hair damage. Resistance Extentioniste is ideal for slow growing, damaged hair lengths **Q: What is the key ingredient in the Resistance Extentioniste range?** A: The key ingredient is Creatine R, an exclusive complex composed of Creatine an amino acid that reinforces the internal structure of the hair fiber. **Q: Is this product safe for color-treated hair?** A: Yes, this product is safe for color-treated hair ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works *by on Reviewed in the United States June 16, 2026* It works, im happy ### ⭐⭐⭐⭐⭐ Love it *by on Reviewed in the United States April 17, 2026* Absolutely love this…it last along time you only need a pea size amount my hair is medium length ### ⭐⭐⭐⭐⭐ Perfect *by on Reviewed in the United States December 11, 2024* This product let my hair looks shiny and soft and the smell is very good ## Frequently Bought Together - KÉRASTASE Resistance Fondant Extentioniste Conditioner, Strengthening and Smoothing Conditioner, Easily Detangles and Seals Split Ends with Amino Acids and Ceramides for Damaged Hair, 6.8 Fl Oz - Kerastase Resistance Force Architecte Shampoo | Reconstructing Repair Shampoo | Formulated with Pro-Keratine Complex | For Weak and Damaged Hair --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/79476829-kerastase-fondant-extentioniste-length-strengthening-conditioner-strengthens-damaged-hair-lengths](https://www.desertcart.us/products/79476829-kerastase-fondant-extentioniste-length-strengthening-conditioner-strengthens-damaged-hair-lengths) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-23*