Discover the transformative power of ManTrust Red Onion Hair Oil, specially formulated for all hair types. Made by ManTrust Pharma red onion oil, this unique oil activates scalp enzymes, optimizing the hair growth cycle for both men and women. Best Ayurvedic Hair Oil for all Men and Women. Unlock your hair's full potential today! Treat your hair with the gentleness of our Onion Red Hair Oil that activates certain enzymes on your scalp thus optimizing the hair growth cycle. The oil prevents breakage and thinning and prevents premature greying.