GMP Certified · SGS International Certified · Made in Hong Kong
The SY1. ExoPDRN Hair Renewal Serum

ExoPDRN · Hair Renewal Serum

Clinical-Grade
Hair Renewal Serum

Copper Peptide GHK-Cu 10,000ppm (98.98% purity) · Bio Peptide · Lycium Barbarum Exosome

Powered by exosome technology and three clinically-studied actives, The SY1. reactivates dormant hair follicles, blocks DHT at the source, and restores a healthy scalp environment.

GMP Certified SGS Certified Made in Hong Kong 3mL · 0.101fl.oz
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Woman with beautiful hair

Science · Integrity · Efficacy

Every drop backed
by science.

Each ingredient in The SY1. is supported by peer-reviewed research, precisely targeting the mechanisms behind hair loss.

Explore Ingredients
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Clinical Results

Clinically tested.
Visibly proven.

Rigorous clinical testing and international journal research validate The SY1.'s efficacy — for natural hair loss, postpartum shedding, and post-transplant recovery.

8 wks
Time to visible results in clinical testing
6 sessions
Recommended treatment course, 3–5 weeks apart
110 days
Hair transplant follow-up, significant improvement
98%
Copper Peptide purity (GHK-Cu)

Key Ingredients

Three Clinically Active Ingredients

Each ingredient is supported by international peer-reviewed research, targeting distinct mechanisms of hair loss to deliver comprehensive scalp and hair renewal.

Copper Peptide · GHK-Cu
10K ppm
Copper Peptide

High-concentration GHK-Cu (10,000ppm, 98.98% purity) increases blood flow across all scalp regions, revitalising hair roots. Stimulates capillaries to restore lost circulation, slow aging, and strengthen hair fibres.

  • Blocks DHT to combat androgenetic alopecia
  • Increases follicle count and inhibits follicle death
  • Boosts VEGF (vascular endothelial growth factor)
  • Angiogenesis · Anticoagulation · Vasodilation
Bio Peptide · Signal Peptide
Bio
Peptide
Compound Signal Peptide

Signal peptides and growth factor-like peptides work synergistically to stimulate dermal papilla cell proliferation, extend the Anagen growth phase, and increase VEGF and KGF to promote blood flow and keratinocyte growth.

  • Stimulates dermal papilla cell proliferation
  • Delays onset of the Catagen phase
  • Blocks DHT binding to androgen receptors
  • Strengthens keratin structure, reduces breakage
Lycium Barbarum Callus Culture Extract
Lycium
Exosome
Stem Cell · Exosome

Exosomes derived from Lycium Barbarum (goji berry) stem cells carry growth factors and signalling molecules that promote intercellular communication, reactivating dormant follicle stem cells and reducing scalp inflammation.

  • Reactivates dormant hair follicle stem cells
  • Improves scalp microenvironment, anti-inflammatory
  • Maintains long-term follicle health
  • Promotes cell-to-cell communication and tissue regeneration
Laboratory science research

Science · Integrity

Formulated with
scientific integrity.

GMP-certified manufacturing, SGS international certification. Every ingredient concentration disclosed. Every formula backed by research.

How It Works

Four Steps to Renewal

The SY1. intervenes precisely at each stage of hair loss — reawakening follicles, boosting circulation, blocking DHT, and restoring scalp health.

STEP 01
Reawaken Dormant Follicles

Exosomes stimulate resting follicle stem cells to re-enter the Anagen growth phase, generating new hair fibres and increasing follicle density and size.

STEP 02
Restore Scalp Circulation

Copper Peptide GHK-Cu stimulates capillaries through angiogenesis, restoring lost blood flow to the scalp to deliver sufficient oxygen and nutrients to follicles.

STEP 03
Block the DHT Pathway

GHK-Cu and signal peptides synergistically inhibit 5-α reductase, suppressing the production of dihydrotestosterone (DHT) to halt androgenetic progression at the source.

STEP 04
Restore the Scalp Environment

Anti-inflammatory properties repair damaged scalp tissue, address seborrheic dermatitis, and create a healthy microenvironment for sustained follicle regeneration.

Research · Evidence

Peer-reviewed.
Clinically evidenced.

Clinical research on exosome-based hair restoration has been published in the European Journal of Pharmacology. The efficacy of GHK-Cu is further supported by an extensive body of stem cell research.

8-week scalp testing demonstrates visible hair regrowth. A 110-day hair transplant follow-up confirms significantly more new hair growth in the experimental group versus control.

VEGFVascular Endothelial Growth Factor
EGFEndothelial Growth Factor
FGF-7Fibroblast Growth Factor 7
HGFHepatocyte Growth Factor
Model with thick healthy hair

Hair Loss Causes

Hair loss is never coincidental.

As we age, blood circulation to the scalp naturally diminishes — depriving follicles of the oxygen and nutrients they need. External stressors and hormonal shifts accelerate this process.

01
Chronic Stress
02
Hormonal Changes
03
Poor Nutrition
04
Scalp Compression
05
Follicle Ageing
06
Genetic Alopecia
07
Iron Deficiency
Growth Phase · Anagen
2–6 years
In a healthy scalp, 90% of hairs are in the active growth phase, with follicles producing hair continuously.
Regression Phase · Catagen
2 weeks
Follicle cells begin to degrade and age, hair fibres thin progressively and growth slows significantly.
Resting Phase · Telogen
2–4 months
Hair roots atrophy, follicles lose activity, hair sheds, and the cycle awaits a new growth phase.
GMP Quality Certified
Good Manufacturing Practice
Ensures consistent production standards and quality in every vial
SGS System Certification
International System Certification
Independent third-party validation of product safety and efficacy
Made in Hong Kong
Lim Brothers INTL Hold Co Ltd
Manufactured in Hong Kong under strict quality controls
Model with beautiful hair

The SY1. · ExoPDRN Hair Renewal Serum

Reclaim fuller, healthier hair.
Starting today.

Clinical formulations · GMP manufacturing · Hong Kong brand