Résistance – Serum Extentioniste – 50ml

Aqua / Water / Eau / 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

1. How often should I use the Sérum Extentioniste?
   Use 1-2 times per week for optimal results. Start with once a week to see how your hair responds, then increase to twice a week if needed. Overuse won't speed up results and may weigh down fine hair.
2. Can I use this on wet or dry hair?
   Apply to damp, towel-dried hair after shampooing for best absorption. The serum can be used on dry hair, but it's most effective when applied to clean, slightly damp strands and scalp.
3. Will this make my hair greasy or weigh it down?
   No, the lightweight formula is specifically designed to strengthen without adding weight or greasiness. However, start with 2 pipettes and adjust the amount based on your hair length and thickness.
4. How long before I see results?
   Most users notice reduced breakage and stronger hair texture within 2-4 weeks of consistent use. For visible length retention and growth, allow 6-8 weeks as this reflects your natural hair growth cycle.
5. Can I use this with other hair treatments or oils?
   Yes, but apply the Sérum Extentioniste first to clean hair, then follow with other styling products or treatments. Avoid mixing it directly with other serums or oils as this may dilute its effectiveness.
6. Is this suitable for colour-treated or chemically processed hair?
    Absolutely! This serum is particularly beneficial for hair weakened by colouring, bleaching, perming, or relaxing. The Creatine R Complex helps rebuild damaged hair structure.
7. Do I need to rinse this out?
   No, this is a leave-in treatment. Apply to scalp and lengths, massage gently, and style as usual. There's no need to rinse.
8. Can I use this if I have a sensitive scalp?
   The formula is generally well-tolerated; however, if you have known sensitivities, perform a patch test first. Apply a small amount behind your ear and wait 24 hours to check for any reaction.
9. What's the difference between this and other Kérastase serums?
   Sérum Extentioniste is specifically formulated for length retention and strengthening weak, breakage-prone hair. Unlike styling serums, this is a treatment product that works at the scalp level to optimize growth conditions.
10. Can men use this product?
    Yes! This serum works for anyone looking to strengthen hair and reduce breakage, regardless of gender. It's particularly helpful for those experiencing hair thinning or slow growth.