GRO+ Advanced Gel-Serum Pen

A drip-free gel-serum pen that targets thinning and low-density areas with precision using a cooling massage applicator.

Boosts visible hair density where you need it most
Drip-free gel formula for controlled, mess-free delivery
Cooling massage applicator refreshes and stimulates the scalp
MD Formulated

Buy Now

Not sure what you need?

Take our free hair quiz

Benefits

This MD-formulated gel-serum targets low-density spots — like the temples, hairline and part — with precision. Using a cooling massage applicator, it delivers Vegaspheres, GROActive+ Complex™ and plant exosomes straight to the scalp, revitalizing thinning areas for a clinically measured improvement in the appearance of hair density.*

*Based on a 120-day independent, third-party clinical study with 40 participants using GRO+ Advanced Hair Serum once daily.

How to Use

Twist to ON. Place the applicator directly onto the scalp. Click the button once to dispense. Massage in. Repeat on other areas of concern. Do not rinse. Use daily. Use as part of the GRO+ Advanced System for best results.

Ingredients

Water/Aqua/Eau, Butylene Glycol, Alcohol Denat., Propanediol, Diutan Gum, Curcuma Longa (Turmeric) Root Extract, (Trifolium Pratense (Clover)/Vigna Radiata) Sprout Extract, Biotinoyl Tripeptide-1, Rheum Rhaponticum Root Extract, Acetyl Tetrapeptide-3, Callicarpa Japonica Fruit Extract, Chlorella Vulgaris Extract, Olea Europaea (Olive) Leaf Extract, Caffeine, Tocopherol, Glycerin, Pentylene Glycol, Hydroxypropyl Cyclodextrin, Lecithin, Sodium Phytate, Helianthus Annuus (Sunflower) Seed Oil, Sodium Starch Octenylsuccinate, Alcohol, Cyclodextrin, Citric Acid, Phytic Acid, Lactic Acid, Cyamopsis Tetragonoloba (Guar) Gum, Xanthan Gum

Ideal For

Anyone seeing signs of visible thinning and shedding or scalp imbalance.

Clinical Results

Visible improvement in the appearance of hair density*

*Based on a 120-day independent, third-party clinical study with 40 participants using GRO+ Advanced Hair Serum once daily.

Science-Backed

Trusted by Experts

Vegan

Clean

Cruelty-Free

Science-Backed

Trusted by Experts

Vegan

Clean

Build Your Hair Wellness® Routine

Best Seller

4.4

Rated 4.4 out of 5 stars

5,697 Reviews

GRO Hair Serum

From $49 ~~$64~~

Supports thicker, fuller-looking hair.

Best Seller

4.7

Rated 4.7 out of 5 stars

482 Reviews

GRO+ Advanced Hair Serum

From $65 ~~$78~~

Targeted care for visible thinning and shedding.

GRO+ Advanced Gel-Serum Pen

From $43 ~~$48~~

Target spot where thinning shows the most.

GRO+ Advanced Hair Growth & Density Supplements

4.8

Rated 4.8 out of 5 stars

15 Reviews

GRO+ Advanced Hair Growth & Density Supplements

From $78 ~~$88~~

An MD-formulated dual-pill supplement clinically proven to boost hair density.

4.7

Rated 4.7 out of 5 stars

1,069 Reviews

GRO Dry Shampoo

From $32 ~~$36~~

A plant-powered dry shampoo that absorbs oil and neutralizes odor.

Baby Hair Strengthen & Style Wand

$24

Instantly smooth baby hairs and flyaways.

Styling & Strengthening Duo

$79 ~~$88~~

4.9

Rated 4.9 out of 5 stars

172 Reviews

HYDR-8 Weightless Repair Oil

From $42 ~~$48~~

A lightweight hair oil that hydrates, smooths frizz and boosts shine.

4.6

Rated 4.6 out of 5 stars

182 Reviews

GRO AGELESS Anti-Gray Hair Serum

From $68 ~~$78~~

A targeted scalp serum that helps reduce new grays.

New

4.7

Rated 4.7 out of 5 stars

121 Reviews

UPLIFT Volumizing Styling Foam

From $14 ~~$32~~

A weightless styling foam that adds instant volume, body and bounce.

Frequently Asked Questions

How long does it take to see results with GRO+ Advanced Gel-Serum Pen?

With consistent daily use of GRO+ Advanced Gel-Serum Pen, many people see results in targeted areas from within 3–4 months.*

*Based on a 120-day independent, third-party clinical study with 40 participants using GRO+ Advanced Hair Serum once daily.

Will GRO+ Advanced Gel-Serum Pen make my hair greasy?

No. GRO+ Advanced Gel-Serum Pen has a lightweight, gel texture that absorbs quickly, so it won’t leave your hair feeling greasy or weighed down.

What is the difference between GRO+ Advanced Gel-Serum Pen and GRO+ Advanced Hair Serum?

GRO+ Advanced Hair Serum is designed for overall scalp coverage, helping boost visible fullness and density across the entire scalp. The GRO+ Advanced Gel-Serum Pen is made for precision application, so you can easily target specific areas where thinning shows the most — like the temples, hairline, part or a defined patch of thinning.

Can I use both the GRO+ Advanced Hair Serum and the GRO+ Advanced Gel-Serum Pen together?

Yes! In fact, they’re designed to complement each other. Use the GRO+ Advanced Hair Serum for all-over scalp coverage, then follow with the GRO+ Advanced Gel-Serum Pen to target areas with more noticeable thinning — like the temples, hairline or part — for extra focused support.

How often should I clean the massage applicator on my GRO+ Advanced Gel-Serum Pen?

For safe, effective results, clean the applicator with 70% isopropyl alcohol after each use. If buildup is minimal, cleaning once a week is sufficient.

How do I use the GRO+ Advanced Gel-Serum Pen?

Twist the pen to ON, then place the applicator directly on your scalp. Click once to dispense the product, then massage it in. Repeat on any other areas of concern. Do not rinse. Use daily.

How many uses will the GRO+ Advanced Gel-Serum Pen last?

Each GRO+ Advanced Gel-Serum Pen contains approximately 150 clicks (applications). 1 click = 1 targeted application.

How long it lasts depends on how many targeted spots you apply it to each day:

1 click per day: lasts about 5 months
2 clicks per day: lasts about 2.5 months
3 clicks per day: lasts about 1.5–2 months

View All Frequently Asked Questions