This shampoo is intended for people with an oily scalp who deal with recurring dandruff — specifically, people who have already completed a two-week course of the PHYTOSQUAM Intensive Exfoliating Treatment Shampoo and now want to maintain those results, rather than someone using it as a first-time dandruff treatment on its own.

It's a consumer, over-the-counter shampoo sold through pharmacies and beauty retailers, not a professional-only salon product.

Phytosquam's maintenance shampoo is designed to be step two, not step one: after an intensive exfoliating treatment clears active dandruff, this formula — built around celandine extract — is meant to keep flaking from coming back without needing to keep using the stronger intensive version indefinitely.

To be used after a two-week course of the PHYTOSQUAM Intensive Exfoliating Treatment Shampoo.

1. Apply to a moistened scalp and massage gently.
2. Rinse.
3. Repeat with a second application, leaving it on the scalp for 2 minutes.
4. Rinse thoroughly.

Pros

• Chelidonium majus (celandine) extract is the lead ingredient, matching the botanical actives Phyto highlights for anti-flaking.
• Two-step application (wash, then a brief second application) is designed to reinforce results between more intensive treatments rather than being a generic daily shampoo.
• Sulfate-free cleansing base built on sodium lauroyl sarcosinate.

Cons

• Contains methylchloroisothiazolinone and methylisothiazolinone, preservatives known to be common scalp-irritation triggers for some users — a real consideration given the target user already has a sensitized, flaking scalp.
• Works as a maintenance step after the separate Intensive treatment shampoo, so used entirely on its own from day one it may not resolve active dandruff as effectively as the two-product system.
• Noticeable essential-oil content (tea tree, rosemary, peppermint) means the scent is pronounced, which some users may not want in a frequent-use shampoo.