Collistar Niacinamide Scrub 250ml. This dense-textured scrub works wonders by balancing the natural oils on your scalp and provides an instant deep cleanse that removes daily build-up of pollutants and other micro-particles. The result is a noticeable boost in your hair's natural shine, all while maintaining the integrity of your skin's barrier. By incorporating a natural exfoliant, this treatment gently rids your scalp of impurities, stimulating circulation and paving the way for healthier hair growth. It's also an excellent choice for those who have recently colored their hair, as it effectively removes any lingering chemical residue, leaving your hair clean and refreshed.