- Brand: KOKYU - Product Name: SPA healing head serum This scalp care serum is used after rinsing your hair and before shampooing. Apply an appropriate amount to the scalp and massage it in. By improving sleep quality and relieving chronic fatigue through head care, and by balancing dryness and sebum to care for the scalp environment, it also helps prevent sagging and a tired-looking face. It provides a natural shine and a manageable finish, eliminating the need for leave-in treatments or oils. Retail Price: 11,000 yen