Refilled | cADPR Booster Pro Hair Growth Serum
🔥 −14% OFF Today · $32.99  $38
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Refilled

cADPR Booster Pro
Hair Growth Serum

Intensive Scalp Care for Sensitive Scalps · Hair Density & Strengthening with Biotin
★★★★★ 4.6 (37) See all reviews ↓
#320 in Scalp Treatments Doctor Developed Minoxidil-Free
$32.99 -14% $38.00
Limited-time price  ·  Free Returns  ·  Free shipping with Prime
  • ✓
    NAADP + cADPR cytokine complexAdvanced follicle activation at the root
  • ✓
    Visible regrowth in as little as 2 weeksWith consistent daily use
  • ✓
    Lightweight, non-greasy serumCooling L-Menthol finish, no residue
  • ✓
    Built-in silicone scalp massagerMess-free, even application
  • ✓
    Minoxidil-Free & gentleBiotin · Hemp Seed Oil · Dexpanthenol
Size: 70ml / 2.36 fl oz Type: Intensive Strengthening Best for: Thin, Weak Hair & Sensitive Scalp
🔬Patented
cADPR™
👩‍⚕️Doctor
Developed
💆‍♀️Built-in
Massager
💧Non-Greasy
Cooling
🚫Minoxidil
Free
See it in action
4.6★
Amazon rating
37
Global ratings
#320
in Scalp Treatments
0%
Minoxidil-Free

Seeing more hair in the drain
than you used to?

Stress, heat styling and aging quietly drain the energy your follicles need to hold onto every strand. Booster Pro was built to put that energy back — without minoxidil.

▾
Real routines, real results
Refilled Product Testing
−89%
Less hair loss in 4 weeks

Measured shed count before & after consistent daily use.

Before and after — reduced hair loss over 4 weeks

Based on Refilled's own product testing. Individual results vary with consistent use.

cADPR Booster Pro serum bottle
Patented cADPR™ Technology

Re-energizes tired follicles from the root

Booster Pro drives Refilled's patented NAADP + cADPR cytokine complex deep into the scalp to wake up the follicle's energy cycle — the intensive formula built for thinning, fragile hair that needs more than a basic serum.

T
★★★★☆
"I've used this for almost two weeks and I'm already seeing improvement in hair growth. I've bleached and dyed my hair for over a decade — my stylist recommended this one."
tars  ·  ✓ Verified Amazon Purchase
Doctor-Developed Formula

Six actives. Zero minoxidil.

🧬NAADP + cADPR

Patented cytokine complex that helps re-energize hair follicles.

🌿Biotin

Supports the keratin structure of stronger-feeling strands.

💧Hemp Seed Oil

Nourishes and conditions a dry, stressed scalp.

🛡️Dexpanthenol

Soothes and helps maintain the scalp's moisture barrier.

❄️L-Menthol

A refreshing cooling finish — lightweight and non-greasy.

🚫Minoxidil-Free

No harsh actives, gentle enough for sensitive scalps.

Built-in silicone scalp massager applicator
Built-in Silicone Massager

Mess-free application, soothing massage

The silicone applicator tip delivers serum straight to the scalp and doubles as a massager to help stimulate the roots — no drips, no sticky fingers.

M
★★★★★
"The applicator makes it easy to apply directly to the scalp without any mess. The serum feels so nice and refreshing — I love taking a few extra moments to massage it in."
megan  ·  ✓ Verified Amazon Purchase
How to use

Three simple steps, morning & night

1

Part dry or towel-dried hair to expose the scalp along the part line.

2

Apply Booster Pro directly onto the scalp, AM & PM.

3

Massage in with the silicone tip for about 30 seconds. Do not rinse.

Find Your cADPR Hair Recovery Fit

Repair Treatment Repair Treatment
Buying Options 		Booster Pro Booster Pro
 Booster Plus Booster Plus
Buying Options 		Effector Plus Effector Plus
Buying Options 		Eye Lash Dual Serum Eye Lash Dual Serum
Buying Options
Customer Reviews ★★★★½ 35 ★★★★½ 37 ★★★★ 123 ★★★★½ 28 ★★★★ 27
Price $30.40 $32.99 $19.99 — $43.50
Product Type Scalp Treatment Intensive Strengthening Serum Balancing Growth Serum Targeted Hair Growth Serum Lash & Brow & Hairline Serum
Key Benefit Daily Scalp Balance Density & Strengthening Moisture & Balance Intensive Spot Recovery Lash & Brow Enhancement
Best For Damaged Hair Thin, Weak Hair & Sensitive Scalp Thin Hair & Dry Scalp Hairline & Crown Thinning Sparse Lashes, Brows, Hairline
When To Use After Shampoo Daily AM & PM Daily AM & PM 2–4 Times Daily Daily AM & PM
Size 200ml / 6.76 fl oz 70ml / 2.36 fl oz 100ml / 3.4 fl oz 15ml / 0.51 fl oz 10ml / 0.33 fl oz

Customer Reviews

4.6 out of 5 · 37 global ratings · 92% rated 4★ & up
Customers say: Customers report positive results with the hair growth serum, noting their scalps feel healthier and refreshed. The product is easy to apply, and customers appreciate that it doesn't irritate their scalp.
Hair growth (9)Ease of use (7)Gentle (6)
★★★★★
New favorite hair serum
"The applicator is thoughtfully designed and makes it easy to apply the product directly to the scalp without any mess. I love taking a few extra moments to massage it in — the serum feels so nice and refreshing on the scalp."
megan
✓ Verified Purchase
★★★★☆
Great hair growth serum
"I've used this for almost two weeks consistently and I'm already seeing improvement in hair growth. I've bleached and dyed my hair for over a decade, and my stylist recommended this one. It's compact and very easy to travel with."
tars
✓ Verified Purchase
★★★★★
Cool new contraption
"Very good and easy, mess-free application. The bottle has soft silicone bristles so it's very comfortable to apply the serum without touching, and you can massage the scalp with it. First time trying something like this — surprised how great the idea is."
ekaterina
✓ Verified Purchase
Ready for stronger, fuller hair?

Refilled Booster Pro

$32.99 $38.00 · Ships via Amazon Prime
✓ Amazon Prime eligible  ·  ✓ 30-day return policy  ·  ✓ Secure checkout
🔬 Patented cADPR™ 👩‍⚕️ Doctor Developed 💆‍♀️ Built-in Massager 💧 Non-Greasy Cooling 🚫 Minoxidil-Free