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• What is Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml designed for?

  Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml is a professional anti-dandruff scalp serum engineered to continuously eliminate visible flakes, relieve symptoms of dandruff, and balance the skin barrier while you sleep. It functions as a cellular scalp balancing fluid, offering an intensive eight-hour overnight action to comfort irritated, itchy skin, specifically for scalps prone to dandruff.

• How should I apply Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml in my evening routine?

  Right before you go to sleep, use the built-in dropper to apply three to four doses directly onto your dry or damp scalp, section by section. Massage the liquid fluid gently into your skin with your fingertips to ensure optimal absorption and distribute the serum evenly across areas of flaking. Because it works overnight to maximize effectiveness against dandruff, do not rinse it out in the morning.

• Will Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml make my clean roots look greasy or flat?

  Not at all. This watery gel fluid is carefully engineered to dry down completely seamlessly within a couple of minutes. It leaves absolutely zero sticky film, tackiness, or oily residue behind, ensuring fine or greasy roots maintain their airy lift and fresh body all day long while leaving hair feeling soft and clean.

• Do I need to wash my hair the next morning after using Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml?

  No, there is no need to wash your hair or rinse your scalp when you wake up. Your skin completely absorbs the active formula overnight, leaving your roots feeling clean, fresh, and product-free so you can go straight into styling your hair as usual in the morning.

• How often should I use Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml?

  For the absolute best results in controlling loose flakes and scalp irritation, you should apply this serum at least three times a week before bed during an intensive treatment window. It can also be used every single night if you are tackling a severe flake flare-up. Many customers report a visible reduction in dandruff within just one or two applications.

• What active ingredients drive the anti-flake and soothing action in Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml?

  The formula relies on Salicylic Acid to gently dissolve and clear loose flakes on contact, combined with Piroctone Olamine to regulate the scalp's ecosystem and slow down flake formation, and Bifidus Prebiotic extract to nourish a strong, healthy protective skin barrier.

• Can I use Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml if I have colour-treated or bleached hair?

  Yes, this formula is entirely safe for colour-treated, highlighted, and chemically processed hair structures. It focuses its active balancing properties directly on the scalp's skin tissue, ensuring your hair lengths remain soft without stripping your salon colour.

• Is Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml sulfate-free?

  Yes, the serum is completely sulfate-free, making it significantly gentler and less irritating on sensitive, flaking scalp micro-environments.

• Can I use Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml in conjunction with other Kérastase products?

  Yes, it is highly recommended to pair this treatment with other products from the Kérastase Symbiose range, such as the Bain Hydratant or Bain Purifiant anti-dandruff shampoos, to create an enhanced, comprehensive routine against dry or greasy flakes.

• Will Kérastase Symbiose Intensive Anti-Dandruff Cellular Night Serum 90ml help treat medical skin conditions like seborrheic dermatitis?

  Please note that this product is a cosmetic conditioning treatment designed to relieve everyday flakes, product buildup, and scalp skin oiliness. It is not a medical cure for chronic skin conditions like seborrheic dermatitis. If you have severe scaling or inflammation, consult a medical professional.