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  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density
  • Multi-Peptide Hair Serum For Density

Multi-Peptide Hair Serum For Density

Most serums treat the surface. RGA Peptide Serum goes deeper.

Formulated with three clinical peptides, growth factors, NMN, and PDRN, this serum works at the cellular level to extend the hair growth phase, improve density, and reawaken thinning follicles - the ones most products simply give up on.

28+ clinically active ingredients. One simple daily routine. Real, visible results.

Choose your supply

Most customers see improved hair density in 8–12 weeks. Consistent use gets results.
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Regenerative Support for Healthier Hair

Powered by 28+ clinically selected ingredients, including peptides, growth factors, PDRN, NMN, and Zinc Thymulin, this lightweight daily serum supports healthier follicles, a balanced scalp, and fuller-looking hair.

✔ Supports thicker, healthier-looking hair

✔ Helps reduce visible shedding

✔ Nourishes and strengthens hair follicles

✔ Supports scalp renewal and hydration

✔ Lightweight, fast-absorbing, non-greasy formula

Why It Works Differently

Unlike traditional hair serums that rely on one or two active ingredients, Roots by GA combines six regenerative technologies to support multiple biological pathways involved in healthy hair.

Peptide Complex – Supports healthier follicles

Growth Factors – Encourage scalp renewal

PDRN + NMN – Support cellular repair and energy

Zinc Thymulin – Helps maintain a healthy scalp environment

Ergothioneine – Protects against oxidative stress

Hydration Complex – Hyaluronic Acid, Aloe & Vitamin B5 for lasting moisture

Water, Glycerin, Aloe Barbandesis Leaf Extract, Hyaluronic Acid, D-Panthenol (Vitamin B5), Copper Tripeptide-1, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-2, Acetyl Tetrapepide-3, Nicotinamide Mononucleotide (NMN), Polydeoxyribonucleotide (PDRN), Zinc Thymulin, Zingiber Officinale (Ginger) Root Extract, Carbopol, Sorbitol, Polysorbate 20, Nicotinamide Mononucleotide, Helianthus Annuus (Sunflower) Sprout Extract, Maltodextrin, Chamomilla Recutita Flower Extract, Cucumis Sativus Fruit Extract, Ergothioneine, Tricholoma Matsutake Mycelium Ferment Extract, Tricholoma Matsutake Extract, Isoprene Glycol, Growth Factor Complex (EGF, IGF-2, VEGF, bFGF, KGF-2, aFGF, SCF), Coccinia Indica Fruit Extract, Eclipta Prostrata Extract, Lecithin, 1,2-Hexanediol (and) Caprylyl Glycol, Rosmarinus Officinalis (Rosemary) Flower Oil.

Real Results. Verified Reviews.

What people noticed after making it part of their routine.

Before

Before

After

After

"My part grew in! I tried a few other serums beofre and nothing worked like this peptide one. I thought at my age this was just my hair, but happy this is making a difference. Try it out and I hope other have good results like me!"

Sara Q.
Before

Before

After

After

"Trust me, I’ve tried all the so-called hair growth “miracles.” Roots actually works pretty well, it won't grow back all your hair if you're bald, but I've definitely noticed more thickness."

James P.
Before

Before

After

After

"A lot of products didn't work well with my type of hair but this peptide serum was light weight, honestly could hardly tell it was there. After about 2 months I noticed the top of my head was growing in!"

Seth G,
Before

Before

After

After

"I was noticing more scalp than hair in the mirror, knew it seemed to be getting worse. I heard about copper peptides and wanted to try RGA. My scalp definitely looks more grown in, and overall my hairs just looks more vibrant."

Meg C.

WHY IT WORKS?

Benefits:

Formula:

Follicle reactivation support:

✓ Copper Tripeptide-1 + Zinc Thymulin

Hair growth phase extension:

✓ Sunflower Sprout Extract + Acetyl Tetrapeptide-3

Stem cell longevity support:

✓ Ergothioneine + Mushroom Ferment

Improved scalp microcirculation:

✓ Ginger Root Extract + PDRN

Inflammation reduction support:

✓ Chamomile + Rosemary Extract

Cellular energy & NAD+ support:

✓ Nicotinamide Mononucleotide (NMN)

Extracellular matrix & follicle structure support:

✓ Copper Peptide + Growth Factor Complex (EGF, IGF-2, VEGF, bFGF, KGF-2)

Key Ingredients

Copper Tripeptide-1

Boosts blood flow, collagen around follicles

Ginger Root Extract

Microcirculation & anti-inflammatory

Biotinoyl Tripeptide-1

Strengthens anchoring at the root

Acetyl Tetrapeptide-2 & -3

Microcirculation & anti-inflammatory

Sunflower Sprout Extract

Protects stem cells, improves anagen renewal

Zinc Thymulin

Regulates hair cycle signaling

How to Use:

Your Best Hair Days Are Ahead

1. Apply 1–2 dropper fulls morning or night
2. Massage into thinning areas
3. Safe with Rx topicals
4. Works synergistically with dermal rolling
5. Expect improvements in 8–12 weeks with consistency

Real Results in Just 3-6 Months

Multi-Peptide Hair Serum For Density
Rootsbyga
Multi-Peptide Hair Serum For Density
$76.00
$76.00

"My part grew in! I tried a few other serums beofre and nothing worked like this peptide one. I thought at my age this was just my hair, but happy this is making a difference. Try it out and I hope other have good results like me!

Sara Q.
Multi-Peptide Hair Serum For Density
Rootsbyga
Multi-Peptide Hair Serum For Density
$76.00
$76.00

"Trust me, I’ve tried all the so-called hair growth “miracles.” Roots is the only one that’s actually working."

James P.
Multi-Peptide Hair Serum For Density
Rootsbyga
Multi-Peptide Hair Serum For Density
$76.00
$76.00

"I was noticing more scalp than hair in the mirror, knew it would only get worse. Until I found Roots! Now, my hair looks healthier and thicker, and I feel like me again."

MEG C.
Multi-Peptide Hair Serum For Density
Rootsbyga
Multi-Peptide Hair Serum For Density
$76.00
$76.00

"No one told me not all hair treatments work — found out the hard way after dropping hundreds! What actually worked? A custom formula from Roots by GA. Should’ve started there in the first place."

Seth

The Roots Growth System

Multi-Peptide Hair Serum For Density
Rootsbyga
Multi-Peptide Hair Serum For Density
$76.00
$76.00
Conditioning Shampoo with Copper Peptides
Rootsbyga
Conditioning Shampoo with Copper Peptides
$49.00
$49.00
Triple-Pathway Hair Supplement
Rootsbyga
Triple-Pathway Hair Supplement
$69.00
$69.00
Peptide Hair Growth System

Everything You Need to Know!

Frequently Asked Questions

A highly concentrated topical treatment designed to boost hair growth and scalp health. This advanced formula features a multi-peptide complex, growth factors, and regenerative actives that reduce scalp inflammation, promote cell migration, and help repair follicles. Can be used independently or in combination with Rx products. Applied via dropper directly to the scalp. Good for sensitive skin - no parabens or fillers.

The Concentrated Peptide Serum delivers multiple benefits for hair growth and scalp health:

✓ Boosts Hair Growth - Multi-peptide complex and growth factors stimulate follicle activity and hair cycling

✓ Reduces Scalp Inflammation - Soothing botanicals and Zinc Thymulin calm irritation and create optimal conditions for growth

✓ Repairs Follicles - PDRN and peptides promote cell migration and tissue regeneration at the follicle level

✓ Strengthens Hair Anchoring - Biotinoyl Tripeptide-1 reduces shedding by anchoring hair more firmly in follicles

✓ Improves Blood Flow - VEGF and Ginger Root Extract enhance circulation to deliver more nutrients to follicles

✓ Protects Against Oxidative Stress - Ergothioneine (EGT) provides powerful antioxidant defense against environmental damage

✓ Supports Cellular Energy - NMN boosts NAD+ levels to support anti-aging pathways in follicle cells

✓ Hydrates the Scalp - Hyaluronic Acid and Aloe Vera provide deep hydration for a healthy scalp environment

✓ Soothes Rx-Related Irritation - Ideal for those using prescription topicals who experience dryness or irritation

✓ Works Independently or with Rx - Flexible OTC option that complements prescription treatments or works on its own

Multi-Peptide Complex:

Peptide Benefit
Copper Tripeptide-1 (GHK-Cu) Stimulates hair growth, enhances blood flow to follicles, increases collagen production, and signals follicle repair pathways
Biotinoyl Tripeptide-1 Anchors hair in follicles, reduces shedding, and stimulates keratin production for stronger roots
Acetyl Tetrapeptide-3 Reduces hair follicle miniaturization and stimulates extracellular matrix proteins for thicker hair
Zinc Thymulin Regulates sebum production, minimizes scalp inflammation, combats oxidative stress, and stabilizes follicular activity

Growth Factor Complex:

Growth Factor Benefit
VEGF Vascular Endothelial Growth Factor - promotes blood vessel formation for improved nutrient delivery to follicles
EGF Epidermal Growth Factor - stimulates cell proliferation and tissue repair
KGF-2 Keratinocyte Growth Factor - supports hair shaft formation and follicle development
bFGF + aFGF Fibroblast Growth Factors - promote cell growth, tissue repair, and follicle regeneration
SCF + IGF-2 Stem Cell Factor + Insulin-like Growth Factor - support follicle stem cells and healthy hair cycling

Regenerative & Hydrating Actives:

Ingredient Benefit
PDRN (Polydeoxyribonucleotide) Promotes tissue regeneration and wound healing, supports follicle repair at the cellular level
NMN (Nicotinamide Mononucleotide) Boosts cellular energy (NAD+ precursor), supports anti-aging pathways in follicle cells
Ergothioneine (EGT) Master antioxidant - reduces oxidative stress, combats pigment loss, and stimulates hair growth
Hyaluronic Acid Deep scalp hydration, creates optimal environment for follicle health
D-Panthenol (Vitamin B5) Strengthens hair structure, improves elasticity and shine
Aloe Vera + Chamomile + Cucumber Soothing botanical blend - calms scalp irritation, ideal for sensitive skin or those using Rx topicals
Ginger Root Extract Boosts scalp circulation, stimulates follicles, anti-inflammatory properties
Matsutake Mushroom Extract Rich in antioxidants, supports scalp health and follicle vitality

For optimal results, apply the Peptide Serum after washing with the Peptide Conditioning Shampoo on a clean, towel-dried scalp. This sequence - cleanse, then treat - maximizes absorption of the active ingredients.

Yes. The Peptide Serum is designed to complement Rx treatments. Many users pair it with minoxidil or other prescription topicals for a comprehensive hair growth routine.

The Peptide Serum is available in 45 ml

Hair growth is a gradual process. Most users begin to notice improvements in hair texture and reduced shedding within 8–12 weeks of consistent use. For visible density improvements, we recommend using the serum consistently for 3–6 months.

The Peptide Serum works synergistically with the entire Roots by GA system - the Peptide Conditioning Shampoo for scalp prep and the Oral Supplement for internal support. For best results, use all three together.