A20 Bioactive Serum delivers clinical-grade follicle activation in 8 precision ampoules. See visible growth in as little as 3 weeks.
Four precision steps that activate dormant follicles and restore your hair's natural growth cycle.
Bioactive molecules reach hair follicle stem cells at the root level
Triggers dormant follicles to enter active growth phase
Fortifies follicles with essential nutrients for thicker strands
Continuous support prevents future thinning and loss
Our exclusive Calamus Complex™ penetrates the dermal papilla to reactivate your hair's natural growth signals. Each ampoule delivers 18 bioactive compounds that work synergistically to:
Double-blind, placebo-controlled study proves significant hair growth in 8 weeks.
208 participants, 6-month randomized trial
Third-party tested for purity and potency
"The clinical data on A20 is remarkable. We observed significant improvements in both hair density and thickness within just 8 weeks."
- Dr. Julie Russak, M.D.
18 clinically-proven botanicals working synergistically to activate your hair's natural growth cycle.
Our proprietary blend of calamus root extract and bladderwrack seaweed delivers concentrated bioactive compounds that penetrate deep into the follicle.
Improve scalp microcirculation by 47%
Maintain scalp health and reduce inflammation
Strengthen hair shaft and prevent breakage
Rich in squalene for follicle nourishment
Vitamin E for antioxidant protection
Soothe irritation and balance scalp pH
"The botanical synergy in A20's formula is scientifically impressive. Each ingredient serves a specific purpose in the hair growth cycle."
- Dr. Jeanine Downie, M.D.
See the transformative power of A20 through verified customer experiences.
45, Women
"My hairline filled in completely after 3 months. The transformation is incredible!"
38, Men
"The crown area that was thinning is now thick and full. My confidence is restored."
29, Women
"My hair feels thicker and looks healthier. The shedding has completely stopped."
32, Postpartum
"Postpartum hair loss reversed completely. My hair is stronger than ever."
35, Women
"Hairline recession stopped and new growth appeared. Absolutely life-changing."
42, Men
"The thinning on top has dramatically improved. My hair looks 10 years younger."
28, Women
"Shedding reduced by 90% and my hair feels thicker. Couldn't be happier."
Join 10,000+ satisfied customers who've transformed their hair
Everything you need to know about A20
Most users see reduced shedding within 4-6 weeks. Visible hair growth typically appears by week 8-12. Clinical studies show 94% of participants experienced significant improvement by month 3.
Apply 1 ampoule (5ml) directly to scalp 3x per week. Massage gently for 2 minutes. Use consistently for best results. Each box contains 8 ampoules for 2-3 weeks supply.
Yes, A20 is 100% color-safe and sulfate-free. The natural botanicals won't strip color or cause fading. Many users report improved color vibrancy due to healthier hair.
Absolutely. A20's formula works on all hair types and both genders. The bioactive compounds target universal hair growth mechanisms regardless of gender or ethnicity.
Results are maintained with continued use. After achieving desired growth, reduce to 1-2 applications per week for maintenance. Stopping completely may gradually return to pre-treatment state.
Yes, we offer a 60-day money-back guarantee. If you don't see results, return the empty ampoules for a full refund. No questions asked.
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