Off & Relax Spa Scalp Essence but it appears to be a Serum based on the product description. The 400ml refill size offers

The 400ml refill size offers convenience and value for regular use

Argania spinosa kernel oil for moisturizing

paired with soothing ingredients

This concentrated yet lightweight ampoule quickly absorbs into the skin without causing any stickiness or oiliness

Off & Relax Spa Scalp Essence but it appears to be a Serum based on the product description. The 400ml refill size offersA Japanese scalp serum developed to care for both the scalp and hair, leading to beautiful and voluminous hair. It contains botanical essences such as swertia japonica and liquorice, as well as hot spring water and amino acids from three locations in Japan. The serum addresses issues like dryness, itchiness, and odor of the scalp, promoting a healthy scalp and beautiful hair. It features an original pomegranate and cedar wood scent.