Kerastase Resistance Serum Extentioniste

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Scalp and Hair Serum

Size: 50ml / 1.7fl.oz.

Kerastase Resistance Serum Extentioniste is a part of the shampoo, conditioner and mask regimen created to strengthen the hair fiber in weakened and damaged hair lengths. This highly concentrated energizing serum creates defensive barrier over the scalp and healthy environment for the hair growth by protecting it against breakage. Kerastase Serum Extentioniste non-greasy formula combines Ceramides and blend of Lipids to help remove impurities while boosting and fortifying the hair for a fresh appearance.


  • For weakened and damaged lengths
  • Purifies & protects the scalp
  • Enriched with Ceramides and Lipids
  • Promotes a healthy scalp 
  • Smoothes the hair fibers
  • Gently perfumes the hair for a sensorial cleanse
  • Cruelty-free/No Animal Testing


Apply Serum Extentioniste directly to the scalp on cleansed, towel-dried hair. Depending on hair type, 2 pipettes for fine hair and 4 for thick hair, position the pipette directly at the root and scalp to distribute 1 full pipette of the serum in a straight line from the front to the back of the head. Follow the pipette with your fingers to massage the serum into the root and scalp as you work through each section. Once application is complete in all sections, massage the entire head to distribute the serum evenly and comb through. Leave in and proceed to blow dry. Recommended to use at least 3 times a week.


Aqua / Water, Polyquaternium-37, Paraffinum Liquidum / Mineral Oil, Amodimethicone, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Menthoxypropanediol, Behentrimonium Chloride, Safflower Glucoside, Maltodextrin, Propylene Glycol, Candelilla Cera / Candelilla Wax, Ppg-1 Trideceth-6, Propanediol, Chlorhexidine Digluconate, Isopropyl Alcohol, Trideceth-6, Acrylates Copolymer, Sorbitan Oleate, Polyquaternium-11, Rose Extract, 2-Oleamido-1,3-Octadecanediol, Cetrimonium Chloride, Camellia Sinensis Leaf Extract, Xanthan Gum, Tocopherol, Bht, Sodium Citrate, Parfum / Fragrance.

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