Rennora Extra Strength Hair Growth Serum – Rennora Beauty

FREE Shipping On All Orders Over $60

STRONGEST Growth Serum for Black Women

Rated 4.3 (7,889) Reviews

Rennora Extra Strength Hair Growth Serum

Our most potent formula yet. Engineered for the most severe thinning, advanced alopecia, and the cases where the original formula needs more firepower. 

2X higher concentration of follicle-activating actives

Built for advanced thinning, traction alopecia & long-stagnant growth

14 additional botanicals not in the regular formula

Same drug-free, plant-based promise. Just more of it.

SSL Secure

No subscription

No auto-renew

VISA

MC

AMEX

DISC

G PAY

PYPL

WHAT MAKES IT EXTRA STRENGTH? 

We doubled the concentration of every active in our original formula and added 14 additional botanicals: stronger DHT-blockers (saw palmetto extract at 2x potency), deeper-penetrating circulatory compounds, and clinical-grade follicle peptide complexes. Same gentle base. More of every working ingredient.

HOW IS THIS DIFFERENT FROM REGULAR RENNORA HAIR GROWTH SERUM?

The Regular Serum is designed for everyday thinning, edge maintenance, and prevention. Extra Strength is engineered for severe cases - advanced traction alopecia, postpartum loss that won't recover, hormone-driven thinning, hair that has been stagnant for years, or anyone who used the original and wants stronger results.

HOW TO USE THIS OIL?

Apply a small amount directly to the scalp once per day; Part your hair in sections, massage gently for 2–3 minutes to stimulate circulation, and leave in. No rinsing required. For best results, use consistently for at least 8–12 weeks.

INGREDIENTS

Soybean Oil, Castor Oil, Grape Seed Oil, Olive Oil, Black Seed Oil, Peppermint Oil, Black Tea Leaf Extract, Lemongrass Oil, Chili Oil, Argan Oil, Tea Tree Oil, Amla Fruit Extract, Bhringraj Extract, Stinging Nettle, Mustard Seed Oil, Basil Oil, Sesame Seed Oil, Rosemary Oil, Sage Oil, Thyme Oil, Aloe Vera, Garlic Bulb Extract, Onion Seed Extract, Pygeum Bark Extract, Biotin (Vitamin B7), Ginkgo Biloba, Neem Extract, Aritha (Soapberry) Extract, Calendula Flower, Chamomile Flower, Dandelion Extract, Saw Palmetto, Panax Ginseng, Fenugreek Seed, Ginger Root, Gotu Kola, Hibiscus Flower, Lavender Oil, Horsetail Extract, Magnolia Flower, Clove Oil, Khas Khas (Poppy) Seed, Clary Sage Oil, Dampuri Extract, Pulankilangu Root, Chandramoolika Extract, Curry Leaf, Ranawara, and Valampuri.

SHIPPING & RETURNS

Free shipping on all orders over $60. Orders ship from our Atlanta facility within 48 hours. Domestic delivery in 3-5 business days. Not satisfied? We offer a full 120-day money-back guarantee. 

"Thanking GOD so far for this amazing product that is bringing my hair in slowly. I've tried everything! I've been dealing with hair loss for the past 6 years from perm damage that caused traction alopecia. I'm excited now! Looking forward to my hair growth journey."

Belinda G.

For the Most Severe Cases

when hair loss has gone beyond what regular products can fix.

If you've been losing hair for 18+ months, if you have visible bald spots, or if other products have failed you - your follicles aren't just dormant anymore. They've changed. Here's what happens, and why a stronger formula is the only thing that reaches them.

01 - DEEPER INFLAMMATION

Chronic, calcified scarring

Years of traction, hormonal disruption, or illness leave follicles encased in inflamed, fibrotic tissue. Regular formulas can't penetrate it.

02 - DEEPER DORMANCY

Follicles in deep sleep

The longer a follicle has been dormant, the more it needs to wake up. After 12+ months, normal stimulation isn't enough to restart the growth cycle.

03 - THE BREAKTHROUGH

2X stronger

49 natural ingredients, doubled in concentration to stimulate growth from the toughest areas. 

WEEK BY WEEK

what you'll see, when you'll see it.

Real timelines from women using the Extra Strength formula. No miracle-day-three promises - just the honest map of what changes, in what order, on the way to month four.

Day 1 → 14

01

DAY 1 → 14

The Inflammation Calms

Title

The doubled anti-inflammatory load cuts scalp irritation and tenderness faster than the regular formula.

Day 15 → 30

02

Day 15 → 30

Edges Fill In First

Title

Baby hairs emerge along your edges and temples - the first visible proof your follicles are waking up.

Day 31 → 60

03

Day 31 → 60

Sprouts in Crown & Bald Spots

Title

Bald spots and stubborn thinning patches that have been dormant for years start filling in. People will start asking what changed.

Day 61 → 120

04

Day 61 → 120

The Transformation

Title

Hair you didn't think would come back, comes back. Edges restored. Crown filled. Density returned to a place you can style and show off.

ONE BOTTLE FOUR CONDI

whatever caused it, we can wake it back up.

You don't need a diagnosis to know your hair is thinning. Rennora Extra Strength Hair Growth Serum is formulated to work across every common cause of hair loss in Black women - so you can stop researching and start growing.

ADVANCED HAIR LOSS & SEVERE EDGES LOSS

Targets follicles damaged by years of braids, weaves, and tension

Penetrates through fibrotic scarring that blocks regular formulas

Restores hairline density in cases doctors said were permanent

Works on edges that have been thin for years

LONG-STAGNANT CROWN & BALD SPOTS

Wakes follicles that have been dormant for months or years

Formula is more potent tan regular strength

Fills in bald spots from all types of hair loss

Rebuilds density in patches that regular treatments couldn't touch

HORMONAL & MEDICATION-DRIVEN HAIR LOSS

Supports regrowth after chemo, surgery, or major illness

Counteracts hair loss from GLP-1s, thyroid meds, antidepressants

2X DHT-blocking power for menopause-driven thinning

AGE RELATED DENSITY LOSS AFTER 40

Reverses the gradual thinning that accelerates after 40

Targets follicles weakened by decades of styling, color, and chemical processing

Effective when minoxidil caused irritation or gave no results

Real Sisters · Real Results

their growth. their stories.

Most growth oils only moisturize the strand. Rennora targets what's actually happening at the root.

Inside the Bottle

four jobs. one formula.

Every ingredient in the bottle does one of four jobs. Here's exactly which plants are doing which work. 

Job 01

Calm The Scalp

● Calendula

 

● Tea Tree

 

● Chamomile

 

● Neem

 

● Lavender

Title

Calms the chronic inflammation that's been suffocating long-dormant follicles

Job 02

Feed the follicle

● Rosemary Oil

 

● Peppermint

 

● Capsicum (Chili)

 

● Ginkgo Biloba

● Black Seed

Title

Drives blood flow to follicles that have been starving for years.

Job 03

Stop the shrinking

● Saw Palmetto

● Onion Seed

● Garlic

 

● Pygeum

 

● Stinging Nettle

 

● Fenugreek

Title

DHT is the hormone that shrinks your follicles. These shut it down without drugs.

Job 04

Wake the dormant

● Bhringraj

● Hibiscus

 

● Amla

 

● Gotu Kola

 

● Biotin

Title

Rare Ayurvedic herbs that signal dormant follicles to restart their growth cycle.

MAXIMUM GROWTH ROUTINE

stronger formula. same routine.

Three minutes, daily, for the full 120-day cycle.

01

Title

Apply directly to scalp

Use the precision dropper to place a few drops directly on your problem areas - edges, crown, thinning spots, or anywhere the scalp is visible.

Works between braids and under weaves

02

Title

Massage for 2-3 minutes

Use your fingertips in small circular motions. This activates blood flow and helps the 38 plant compounds penetrate down to the follicle.

No rinse. No mess. No residue.

03

Title

Repeat daily for 120 days

Morning or night, whichever fits your routine. Consistency is what wakes dormant follicles. Skipping days resets the clock - so make it a habit.

One bottle lasts ~30 days

The most common mistake: Women quit at day 30 because they don't see "miracle" results overnight. Your follicles need the full 90-120 day cycle to wake up, repair, and grow new strands. That's why we built the guarantee around 120 days - it gives the biology time to work.

Honest Comparison

if your hair loss is severe, you need the proper tool.

See the difference

It's in the bottle.

EXTRA STRENGTH

Other products

Targets the inflammation causing dormancy

✓ Yes

✗ Only moisturizes

Active ingredients

49

1 - 5

Drug-free, plant-based

✓ Yes

Often relies on chemicals

Ships in 48 hours from Atlanta

✓ Yes

2 - 8 weeks common

120-day money-back guarantee

✓ Yes

Don't believe in their product

Black-owned, independently operated

✓ Yes

Often acquired by big companies and watered down

try every drop. every day. for 120 days.

If our most potent formula doesn't deliver visible, real growth on hair you thought was gone for good, email us and we send your money back.

— Tonya Astor

Founder · Rennora Beauty · Atlanta, GA

Questions Answered

the most common questions before buying.

What if I've tried everything and nothing has worked?

Most of our customers tell us they had tried everything before Rennora - I get it. The reason those failed is they only moisturized the strand or they weren't made to solve the four causes of black women's hair loss. Your follicles are still alive - they're just inflamed and dormant. Rennora is the only formula targeting the inflammation at the root. And if it doesn't work for you, the 120-day guarantee means you don't lose a dollar trying.

Do I need Extra Strength, or is the Regular serum enough?

If your scalp is visible through the hair, if you have actual bald patches, if you've been dealing with this for 18+ months without improvement, or if you've tried other products without results - go straight to Extra Strength. If you're maintaining or have mild thinning, the regular formula is the right starting point. Most women come to Extra Strength after trying the regular and wanting stronger results, which is exactly why we built it.

Will Extra Strength irritate my scalp because it's stronger?

The actives are concentrated - but the base is the same gentle, plant-based, drug-free oil. Most women tolerate it the same as the original. If you have a known sensitive scalp, do a patch test on day one, and start every-other-day for the first week. The formula is sulfate-free, paraben-free, fragrance-free, and safe for color-treated and chemically processed hair.

How fast will I see results with Extra Strength?

Most women report early signs - reduced shedding, calmer scalp, fine baby hairs - within the first 3-6 weeks. The deeper transformation (filled-in edges, regrown crown, restored bald spots) shows up between weeks 6-16. Hair growth is biology, not magic. Severe cases need the full 120 days to fully turn around.

Can I use it with the regular Rennora serum or other products?

Don't layer Extra Strength with the Regular - you'd be doubling up unnecessarily. You can absolutely use it alongside your normal shampoo, conditioner, leave-ins, and styling products. Apply Extra Strength to dry or damp scalp, then style as usual. 

Is this a subscription? Will I be auto-charged?

We don't enroll you in anything you didn't ask for. There are no hidden charges, no auto-renewals.

Is it safe to use with braids, weaves, or color-treated hair?

Yes. The serum is designed to be applied directly to the scalp - between braids, under weaves, or on natural hair. It's drug-free, sulfate-free, paraben-free, and gentle enough for daily use on color-treated and chemically processed hair.

How fast does it ship?

We ship from our Atlanta facility within 48 hours of your order, often same day. Tracking is emailed the moment your package leaves the warehouse. Most US orders arrive in 3 to 5 business days.

How do I get my money back if it doesn't work?

Email support@rennorabeauty.com within 120 days of receiving your order. You don't need to return anything. We refund the full purchase price to the same card you used. Real refunds, real fast. We're a small Atlanta team, not a faceless conglomerate.

Your Hair Is Waiting

wake your follicles up.

300,000+ women have made the choice. The 120-day guarantee means the risk is on us, not you.

Pick My Bundle - Save Up To 62% →

Free shipping from Atlanta · 120-day money-back