Our new Ghost Exfoliating Scalp Nectar is the best first step to healthier-looking hair. Powered by AHAs and BHAs to exfoliate and remove product buildup, dead skin and excess oil for a clean, refreshed scalp. Gentle enough for all scalps. This lightweight, nectar-like serum is powered by AHAs and BHAs to exfoliate and remove product buildup, dead skin and excess oil for a clean, refreshed scalp. Gentle enough for all scalps.