Hair Loss and Density

The actives with the strongest receipts for hair density are peptides, not botanicals. A biochanin-A and acetyl-tetrapeptide-3 combination raised terminal hair count 8.3% against 8.7% for 3% minoxidil over 24 weeks, with no significant difference between the two arms, in an independent triple-blind trial of 32 people with androgenetic alopecia (Lueangarun & Panchaprateep, J Clin Aesthet Dermatol 2020). Rosemary oil earned a separate head-to-head: over six months it matched 2% minoxidil on hair count in a 100-person trial of pattern hair loss, with less scalp itch (Panahi, Skinmed 2015).

What the evidence does not say

Onion does not regrow hair at a cosmetic dose. The widely cited 87% figure comes from crude onion juice applied to alopecia areata, an autoimmune condition, not androgenetic thinning (Sharquie, J Dermatol 2002); it cannot transfer to a bulb extract. Hair loss with a sudden, patchy or rapid onset is a medical matter, and a dermatologist should see it. For gradual thinning, the receipts above describe what these actives measured, at the dose the studies used.

Explore the peptide density collection, the rosemary range, and all scalp serums.