Onion

Topical crude onion juice (Allium cepa) may help treat alopecia areata type of hair loss. ¹⁴⁰

Physiological Effects and Benefits of Onion

• Believed to induce an immune response that triggers hair regrowth, onion juice produced significant hair growth in both men and women when applied twice daily during a two month placebo-controlled clinical trial. It also contains sulfur, a nutrient vital to hair growth, and has other phytochemicals that may stimulate growth by irritating the skin. ¹⁴⁰
• One of the best sources of quercetin, a potent antioxidant. ⁷⁹