Rosemary Water vs. Oil for Hair Growth: Science & Benefits Comparison – HIQILI Official Store

DIY Rosemary Water vs. Essential Oil: Which is Best for Hair Growth?

By HIQILI Updated: December 2025

If you’ve been scrolling through TikTok lately, you’ve likely seen the viral trend: Rosemary Water. Influencers are boiling fresh sprigs in their kitchens, claiming it transforms thinning hair.

But here’s the question we get asked every day: "Is boiling water actually better than just using concentrated Rosemary Essential Oil?"

Rosemary water vs essential oil for hair growth

Boiling fresh rosemary vs. using concentrated oil: Which wins?

The Science: Why "Oil" Often Wins

Here is a scientific fact most DIY videos miss: Potency.

Many of rosemary's key hair-growth compounds, such as Carnosic Acid (known for tissue healing) and antioxidants, are fat-soluble. This means they are most effectively extracted into an oil, not water. When you just boil rosemary in water, you may be leaving some of the most potent nutrients behind in the leaves.

Comparison showing a large pile of fresh rosemary sprigs next to a single, concentrated drop of essential oil, illustrating potency.

At a Glance: Water vs. Oil

Both methods utilize the power of rosemary, but they differ significantly in potency and convenience.

Feature DIY Rosemary Water Rosemary Essential Oil
Potency Mild (Water-soluble only) High (Full spectrum extract)
Shelf Life 3-5 Days (Refrigerated) 2-3 Years (Shelf Stable)
Best Hair Type Oily / Fine Hair Dry / Thick / All Types
Prep Time 1 Hour (Boil & Cool) 0 Mins (Ready to Use)

Method 1: The DIY Rosemary Water

Rosemary water is a gentle, lightweight rinse. It's a great option if you have extremely oily hair and want a daily refresher without adding any weight.

The Recipe

  • Step 1: Take 3-5 sprigs of fresh organic rosemary.
  • Step 2: Add to 3 cups of water and bring to a boil.
  • Step 3: Simmer for 15-20 mins until water turns amber.
  • Step 4: Cool completely, strain, and bottle.

A pot of fresh rosemary sprigs simmering in water on a kitchen stove to make DIY rosemary water hair rinse.

⚠️ The "Mold" Warning: Because rosemary water has no preservatives, it is a breeding ground for bacteria. You MUST keep it in the fridge and throw it away after 5 days. Spraying spoiled water on your scalp can cause irritation!

Method 2: The Rosemary Essential Oil (Recommended)

If you want results that are backed by studies (comparable to Minoxidil 2%), Rosemary Essential Oil is the gold standard. It captures the plant's volatile compounds in their most concentrated form.

A premium amber glass bottle of HIQILI 100% Pure Rosemary Essential Oil sitting next to fresh rosemary branches on a natural wooden surface.

Why We Prefer Oil: It's consistent. You get the exact same potency every time, without the hassle of cooking or worrying about mold. Plus, HIQILI Rosemary Oil is steam-distilled to ensure purity.

How to Use Rosemary Oil (By Hair Type)

Many people fear oil will make their hair greasy. The secret is how you apply it.

Close-up of a person adding a few drops of rosemary essential oil to a dollop of shampoo in their hand for effortless application.

1 For All Hair Types (The Shampoo Hack):
This is the easiest method. Simply add 5-8 drops of HIQILI Rosemary Oil into your shampoo bottle (per 100ml). Shake well. You treat your scalp every time you wash, with zero extra effort or grease.
2 For Dry/Thick Hair (Leave-In Treatment):
Mix 3 drops of Rosemary Oil with 1 tablespoon of Jojoba Oil. Massage into the scalp and leave it in overnight or for a few hours before washing.
3 For Fine/Oily Hair (Pre-Shampoo Mask):
Apply the diluted oil mixture to your scalp 30 minutes BEFORE you shower. Massage it in, let it work, and then shampoo it out completely. You get the growth benefits without the weighed-down look.

FAQs

Can I mix rosemary oil into my rosemary water?

Oil and water don't mix naturally. If you want to boost your water spray, you'll need to shake it vigorously before every use, or use a solubilizer. We recommend sticking to the oil-in-shampoo method for better consistency.

How often should I use it?

Consistency is key. Use it 2-3 times a week (every wash day) for best results. Most studies show visible improvement after 6 months of consistent use.

Is it safe for color-treated hair?

Yes, especially when mixed into a color-safe shampoo or carrier oil. It does not strip color like harsh chemical treatments might.

Final Verdict

If you love daily DIY rituals and have time to brew fresh batches, Rosemary Water is a lovely gentle refresher.

But if you want a potent, science-backed, and hassle-free solution that fits a busy lifestyle, Rosemary Essential Oil is the clear winner. Start your growth journey today with HIQILI's pure steam-distilled oil.