Loyalty: GRO Brow Serum

A clean, vegan brow-enhancing serum that uses powerful plant-based phytoactives and clinically proven peptides to boost fullness in sparse or thinning brows.

Promotes visibly fuller brows
Powered by plant-based phytoactives
Clinically proven results

Benefits

Improves visible fullness in sparse or thinning brows
Supports long-term strength and vitality
Safe for use on tattooed and microbladed brows

How to Use

We recommend applying GRO Brow Serum twice daily for the first two months, then switching to once daily, in the morning or evening. In the morning, apply to clean, dry skin, prior to your makeup routine. In the evening, apply after you've washed your face and completed your skincare routine.

- Hold wand horizontally and apply gently along your brow line.
- Repeat daily, decreasing to once daily after two months.
- Replace your GRO Brow Serum every two months for freshness, safety and best performance.

Ingredients

Water/Aqua/Eau, Pentylene Glycol, Propanediol, Glycerin, Butylene Glycol, Magnolia Officinalis Bark Extract, Gellan Gum, Xanthan Gum, (Trifolium Pratense (Clover)/Vigna Radiata) Sprout Extract, Sodium Benzoate, Potassium Sorbate, Lactic Acid, Dextran, Sodium Hydroxide, Acetyl Tetrapeptide-3, Trifolium Pratense (Clover) Flower Extract

Ideal For

Those taking a proactive approach to hair wellness® before visible thinning appears.

Complete Your Routine

GRO Lash and Brow Kit

Target signs of lash and brow thinning with our original, best selling GRO Lash and Brow Serums. Infused with powerful phytoactives, each serum works to revitalize roots for thicker, fuller looking lashes and brows. Formulated with clean, vegan ingredients, and ideal to use as a daily ritual. Delivers real, visible results in as soon as 30 days for lashes and 60 days for brows.*

Hair Longevity

Hair wellness® isn’t just about growth — it’s about preserving the scalp’s youth and extending the life of every strand for long-term vitality.

Biotech Innovation

By combining powerful plant actives with biotech innovation, we create advanced solutions that work synergistically with your hair biology.

Clinically Proven

Our formulas are backed by rigorous clinical and placebo-controlled studies, showing visible improvements in density, shedding and scalp health.

Science-Backed

Trusted by Experts

Vegan

Clean

Cruelty-Free

Science-Backed

Trusted by Experts

Vegan

Clean

Build Your Hair Wellness® Routine

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Frequently Asked Questions

How soon can I expect to see results with GRO Brow Serum?

Results vary by individual. Follow the instructions carefully and you can expect visible results in as soon as 4–8 weeks.

What color is GRO Brow Serum?

The serum is completely clear — it applies and dries without any color.

Can I use GRO Brow Serum if my brows are tattooed?

Yes. GRO Brow Serum is safe to use over microblading or tattoos and won’t affect them or hinder the serum’s effectiveness in any way.