Hair Growth Hack That Actually Works? Rosemary Oil For Hair Growth
- OOF!
- Jun 14
- 4 min read
Rosemary oil might just be your new hair growth bestie.
If you’ve spent any time in the haircare corner of the internet lately, you’ve probably heard people singing the praises of rosemary oil for hair growth. But is it actually worth the buzz?
Spoiler alert: Yes—and there’s science to back it up.
What Is Rosemary Oil?
Rosemary oil is an essential oil extracted from—you guessed it—rosemary, the herb you might already have in your spice rack. But aside from making your roasted potatoes taste amazing, it has some pretty magical benefits for your scalp and hair.
How Does Rosemary Oil Help With Hair Growth?
Here’s why rosemary oil has become a go-to for anyone trying to regrow thinning areas, boost overall hair density without turning to harsh chemicals or expensive treatments.
1. It Increases Blood Circulation to the Scalp
More blood flow = more oxygen and nutrients feeding your hair follicles = stronger, healthier, longer hair over time.
2. It May Block DHT (The Hair Loss Hormone)
DHT is a hormone linked to thinning hair and hair loss—especially around the temples and crown. Rosemary oil has been shown to block DHT in some studies, similar to how minoxidil (Rogaine) works.
In a 2015 study, rosemary oil was found to be as effective as 2% minoxidil at promoting hair growth—without the scalp irritation! Yes. Really.
3. It Fights Inflammation and Dandruff
A healthy scalp is a growing scalp. Rosemary oil has natural anti-inflammatory and antimicrobial properties that help keep your scalp flake-free and happy.
How to Use Rosemary Oil for Hair Growth
This part’s key—don’t just dump it on your head. You can use a pre-blended hair oil serum like the J&L Naturals hair oil serum for hair growth or Plant Therapy castor oil and rosemary oil blend. Just make sure it’s the real deal—no fake fragrance oils, please.
Want to make it yourself? We're teaching you how below!
The hair oil is crafted with 9 botanical extracts known to nourish your hair and stimulate circulation in the scalp for hair growth including rosemary oil.
What You Need for a DIY Rosemary Oil Scalp Treatment
Rosemary essential oil (100% pure)
A carrier oil (pick one that works with your scalp type—see below!)
A scalp massager (optional but highly recommended—like our OOF! heart-shaped scalp brush 💖)
Choosing the Right Carrier Oil: What Works (and What Doesn’t)
Your carrier oil isn’t just a filler—it can make or break your results. And if you have dandruff, scalp sensitivity, or fungal issues, choosing the wrong oil might make things worse.
Here’s a breakdown of popular carrier oils + what they’re best for:
Carrier Oil | Best For | Avoid If | Bonus Benefits |
Castor Oil | Thinning hair, hair loss, dry scalp | Can be too thick on its own—mix it with lighter oils | High in ricinoleic acid, helps boost circulation + supports regrowth |
Jojoba Oil | All scalp types, especially oily or acne-prone | Rarely causes issues | Closest to natural sebum—great for balance |
Grapeseed Oil | Oily, flaky, or sensitive scalps | Rarely causes issues | Lightweight, antifungal, absorbs easily |
Argan Oil | Dry, frizzy, or color-treated hair | May feel heavy on fine/oily hair | Rich in vitamin E, smooths and strengthens |
Coconut Oil | Coarse, very dry hair only | Avoid if you have dandruff or fungal issues | Can trap yeast and clog follicles |
Olive Oil | Extremely dry or damaged hair | Avoid for dandruff/fungal-prone scalps | May feed Malassezia (scalp yeast), causing flare-ups |
⚠️ If you deal with dandruff, fungal acne, or seborrheic dermatitis, your safest picks are grapeseed oil or jojoba oil. A blend with a little castor oil for growth (but dilute it—it’s thick!)
Instructions For Using Rosemary Oil
Mix 3–5 drops of rosemary essential oil with 1 tablespoon of your chosen carrier oil.
💡 Pro tip: Mix half castor oil + half grapeseed or jojoba for the best of both worlds—growth + easy rinse-out.
1. Massage into scalp using fingertips or a scalp brush for 5–10 minutes.
2. Let it sit for 30 minutes to overnight.
3. Wash thoroughly—especially if using castor or coconut oil.
4. Repeat 2–3 times a week for 3–6 months.
❗️Never apply essential oils directly to your skin without diluting them. They’re strong, and you could end up with irritation.
Real Talk: What to Expect
Don’t expect instant mermaid hair overnight. BUT—many people see less shedding, stronger strands, and baby hairs making a comeback within 3 to 6 months of consistent use.
The key? Stick with it.
🧴 Pro Tip: Add to Shampoo or Serum
You can also add a few drops of rosemary oil to your shampoo or conditioner, or use a pre-blended hair serum. Just make sure it has all natural ingredients.
Final Thoughts: Should You Try It?
If you're looking for a natural, science-backed way to support your hair growth journey, rosemary oil is 100% worth a try.
Got questions? Tried rosemary oil before? Drop your tips or stories in the comments below—we’d love to hear from you!
$50
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$50
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