An intensive hair serum with Salicylic Acid to use at night for sensitive dry scalps prone to dandruff.

Symbiose Sérum Nuit Intensif by Kérastase is a night serum for sensitive scalps prone to dandruff that should be combined only with Bain Crème Apaisant for the best results. It is sulfate-free, silicone-free, and paraben-free. The serum is enriched with salicylic acid for a breathable scalp and Bifidus for a healthier scalp and to remove loose dandruff flakes in the hair.

This non-sticky and non-greasy formula has a translucent water-like texture combined with a luxurious fine fragrance.


  • Hair is stronger, shinier, and smoother
  • Reduces hair breakage by 44%
  • Reinforces and strengthens hair
  • Hair is moisturized, hydrated, and conditioned

How to use:

Apply 3 to 4 doses on the dry or wet scalp, section by section. (1 dose = 1 pipette until the mark).
Massage gently.
Do not rinse and keep overnight.

*Use at least 3 times a week before going to bed, during a 4-week period.


  • Salicylic Acid: The go-to ingredient for scalp exfoliators, instantly peeling dead skin off scalp and getting rid of loose dandruff flakes. Thanks to its exfoliating action, salicylic acid participates in cleansing of sensitive scalps.
  • Bifidus: This active is a bacterial prebiotic fraction, acting as a nutrient that fosters the multiplication of helpful bacteria known to have benefits for dry scalps. Bifidus prebiotic fraction is known to favor a healthy scalp ecosystem. It helps to strengthen the scalp's skin barrier.


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