Harvey Extreme — Hair Growth Oil
Ingredients Routine Colorways Reviews FAQ Shop Now

Maximum Growth & Strength Formula

Fourteen botanicals.
One extreme infusion.

Batana oil, black seed, rosemary and eleven more — steeped into a single 4oz routine built for scalp, strand and length.

Shop the Extreme Formula See the Infusion
4 oz / 120 mlFor all hair types14 botanicals infused
14 Botanicals
Harvey Extreme Hair Growth Oil bottle, gold edition
Batana Oil✦Sweet Almond Oil✦Jojoba Oil✦Black Seed Oil✦Rosemary✦Fenugreek✦Fennel✦Hibiscus✦Jasmine✦Red Rose Petals✦Garlic✦Cloves✦Star Anise✦Biotin✦

Formulated for

Four jobs. One bottle.

Every ingredient earns its place by doing one of these, from the first application to week twelve.

Nourishes Hair & Scalp

Carrier and essential oils feed the scalp barrier, easing the dryness and buildup that can stall healthy growth.

Hydrates & Moisturizes

Humectant-rich oils help strands hold onto moisture, so hair stays pliable instead of brittle.

Supports Hair Growth

Rosemary and fenugreek are long-standing scalp-circulation botanicals, paired here with biotin for the growth phase.

Promotes Thickness

Formulated for consistent use, so fine or thinning strands can read fuller and denser over time.

The infusion, catalogued

Fourteen botanicals, three roles.

Every drop is built in layers — carrier oils to deliver, herbs and flowers to treat, one active to feed the growth phase.

Botanicals

09

Rosemary

The most talked-about scalp botanical for circulation — the backbone of the growth claim.

Fenugreek

Seeds rich in proteins and nicotinic acid, steeped into the oil for strand strength.

Fennel

Traditionally used to add body and the appearance of fullness to fine hair.

Hibiscus

Called "the hair flower" in Ayurvedic practice, prized for shine and scalp conditioning.

Jasmine

Rounds out the fragrance and is traditionally paired with scalp oils for a calming routine.

Red Rose Petals

A mild, cooling botanical that softens the overall scent profile.

Garlic

A sulfur-compound-rich bulb, long used in folk hair remedies for strand resilience.

Cloves

A warming spice oil included for scalp circulation and as a natural preservative.

Star Anise

An anise-scented pod that layers into the fragrance and the formula's apothecary roots.

Oils

04

Batana Oil

Cold-pressed from the American oil palm nut, a staple of Honduran Miskito hair traditions for generations.

Sweet Almond Oil

A light, vitamin E–rich carrier that softens strands without weighing them down.

Jojoba Oil

Structurally close to the scalp's own sebum, so it absorbs rather than sits on the surface.

Black Seed Oil

Nigella sativa oil, used across Middle Eastern and South Asian traditions for scalp care.

Actives

01

Biotin

Vitamin B7 — the nutrient most associated with keratin, the protein hair is made of. The one ingredient here that isn't a botanical.

How to use

Three steps. Twice a week.

The oil is concentrated — a little goes further than it looks.

01

Section

Part clean, damp or dry hair into small sections so the oil reaches your scalp, not just the surface.

02

Saturate

Warm 8–10 drops between your palms and massage into the scalp in slow circles for two minutes.

03

Seal

Work whatever oil remains through your lengths and ends to lock in shine and moisture.

Frequency — 2–3 times a week, or nightly for extra-dry or coily scalps.

What to expect

Consistency, mapped.

Week 1–2

Scalp feels less tight and flaky after wash day, as buildup starts to clear.

Week 4–6

New growth is often visible along the hairline and part with consistent use.

Week 8–12

Existing strands read fuller and denser — many find this is when thickness becomes visible.

Results depend on hair type, scalp health and how consistently the routine is followed.

Two colorways

Same infusion. Different glass.

Harvey Extreme Hair Growth Oil, Teal Edition Harvey Extreme Hair Growth Oil, Gold Edition

Both editions carry the full fourteen-botanical Extreme formula. The colorway is entirely a matter of preference — pick whichever calls to you.

From the routine

What consistent use looks like.

"My scalp isn't tight and flaky anymore after the first week. The rosemary scent doesn't hurt either."

MA
M. AlvarezVerified purchase, 1 week

"My scalp already feels less irritated after just a few uses. Excited to see how my edges look a couple months from now."

DO
D. OkaforVerified purchase, 4 days

"A little goes a long way — at this rate, one bottle should easily last two months of twice-weekly use."

RC
R. ChenVerified purchase, 6 days

"Finally an oil that doesn't leave my scalp greasy by the next morning. Smells incredible too."

TB
T. BaileyVerified purchase, 2 days

Questions

Before you start.

How often should I use it?
Most people see the best results applying 2–3 times a week directly to the scalp. Nightly use is fine for very dry or coily hair types.

Will it work for my hair type?
Yes — the formula is built for all hair types and textures. How you section and apply it may change, but the routine stays the same.

Will it stain my pillowcase?
Oil-based products can transfer. We'd suggest applying at least an hour before bed, wrapping your hair, or sleeping on a satin or silk pillowcase.

What's the difference between Gold and Teal?
Both bottles carry the same fourteen-botanical Extreme formula. The colorway is entirely a matter of preference.

How long until I see results?
Most people notice scalp changes within two weeks and visible new growth by week six. See the timeline above for what to expect at each stage.
Harvey Extreme Hair Growth Oil, 4oz bottle

Get yours

Begin the routine.

One bottle. Fourteen botanicals. Enough for roughly two months at twice-weekly use.

$25.00
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