Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil — Rosemary Hair Oil with Biotin

It's an oil applied BEFORE you wash your hair (not after, not as a leave-in) with rosemary, mint, and biotin — the idea is to massage it into the scalp to stimulate circulation in that area, similar to how a massage helps relax a muscle, and let it sit before washing with regular shampoo.

Anyone who wants to add a scalp massage and care ritual before washing — it's not a medical treatment for hair loss with strong evidence behind it, it's a low-cost complement with preliminary evidence.

It's the most viral hair oil on TikTok under the #rosemaryoilforhair hashtag (billions of cumulative views) — unlike the Olaplex N°.7 in this ranking, which protects hair from flat-iron and blow-dryer heat, this is a pre-wash scalp oil with no bonding technology or shine function. With rosemary oil, mint, and biotin, it has over 122,000 reviews and 4.5 stars — over 60,000 bought last month. To be upfront: the scientific evidence is preliminary (small, inconclusive studies comparing it to minoxidil), and in 2023-2024 there was a viral TikTok controversy where several people reported hair loss after very frequent use — dermatologists attributed it to irritant or allergic contact dermatitis from the essential oils (rosemary, mint) on sensitive scalps, not a defect in the product itself. As with any essential oil, patch-test a small area first.

At under $9 for a bottle that lasts months, it's one of the cheapest ways to add a scalp-massage ritual to your routine — but precisely because it's so cheap, it's not worth expecting a dermatological-treatment-level result: it's a low-risk complement if your scalp tolerates it well, not a substitute for minoxidil if hair loss is a real medical issue you're already treating with a professional.

The reference price is $8.97 on Amazon. It can change, so check the current price before buying.