On my 2nd bottle -
"On my 2nd bottle - no new growth so far but hopeful will see results in near future."
CLINICALLY-PROVEN
TO SUPPORT FULLER, HEALTHIER-LOOKING HAIR*
93%
experienced healthier-looking hair*
83%
saw visibly fuller, thicker hair*
70%
noticed less shedding and breakage*
*In a 4 month clinical study, 30 female participants with early to moderate thinning hair used Zenagen Densifying Hair Serum twice-daily
Real people Real Results
Densifying Hair Serum
Clinically-proven to support visibly thicker, denser-looking hair*, this lightweight, water-based serum targets areas prone to thinning. Powered by CO2-extracted botanicals, it absorbs quickly without residue while helping balance the scalp for fuller-looking hair over time.
Size
1 fl. oz
1.7 fl. oz.
3.4 fl. oz.
Size
CLINICALLY-PROVEN
TO SUPPORT FULLER, HEALTHIER-LOOKING HAIR*
93%
experienced healthier-looking hair*
83%
saw visibly fuller, thicker hair*
70%
noticed less shedding and breakage*
*In a 4 month clinical study, 30 female participants with early to moderate thinning hair used Zenagen Densifying Hair Serum twice-daily
Real people Real Results
As Seen In
Formulated with Powerful Natural Ingredients
Shampoo
Clean, plant-powered formulas designed to strengthen, protect, and transform the look and feel of your hair.
GREEN TEA LEAVES
A source of natural antioxidants that help soothe the scalp and support a balanced environment for healthy-looking hair.
SAW PALMETTO
A plant-derived extract known for its role in supporting hair density. Commonly used to maintain a healthy hair growth cycle.
PUMPKIN SEED EXTRACT
A nutrient-rich botanical known to support a balanced scalp and help hair appear stronger, fuller, and more resilient.
Overall rating: 4.571429 / 5 from 686 reviews.
AI Generated Review Summary
The Densifying Hair Serum is praised for its pleasant smell and quick absorption without residue. Customers report noticeable improvements in hair thickness and health, though opinions on the overall effectiveness vary. Some users experience a healthier scalp, while others see little to no change.
Summary topics
- Smell: 9%
- Growth: 8%
- Residue: 4%
- Results: 11%
Review topics: ["volume","weight","smell","use","results","fragrance","improvement","difference","spots","feels","texture","works","looks","amount","consistency","effect","residue","hair","scalp","serum","bottle","body","reduction","growth","shampoo","zenagen","shedding","regrowth","conditioner","see"].
Review highlights
- "I don't notice any residue and think it's working...my hair looks fuller and I love that the product is all natural!" —
- "helps my scalp feel moisturized - time will tell if it's making an actual difference." —
- "Easy to use, has a nice smell and makes my scalp feel great!" —
Reviews
The serum is easy to
"The serum is easy to put on and by morning my hair is not greasy at all! I love this product."
My bald spots love this
"My bald spots love this serum! I had started to fill in!"
Postpartum hair growth
"I’ve been using this product for about two months now, and I have seen a lot of new growth! My hair is also growing faster than it has in the past. I’ve already recommended it to multiple people, and repurchased it myself! Will continue using this and documenting my hair growth journey."
I think the top of
"I think the top of my hair is getting thicker. It falls in better now after a month"
Less Shedding noticed. Consistency is
"Less Shedding noticed. Consistency is the key. On my 3rd bottle, will continue use."
After a few months, my
"After a few months, my hair looks thicker and healthier."
Awesome product really works and
"Awesome product really works and doesn’t make your hair feel like there is product in it!!!"
This is a great product
"This is a great product that is easy to apply and works"
I use this at night.
"I use this at night. Not heavy or greasy. Works together with the other products. It works!"
Q&A
- Hello! I had breast cancer and finished chemo December 14. I started using the shampoo on my head. I have just peach fuzz on my head currently. I was thinking of getting the Thickening Hair Serum, would this be a good thing to start using? Once I start it do I have to continue for the rest of my life with the serum? I am so want my hair to grow in and fast. I am sick of being bald. Please help! Thank you!
- Hi! We are so sorry to hear about your experience with chemotherapy. The serum would be a wonderful thing to use to help boost the results of the shampoo. We suggest using for as long as possible to keep up with the positive results you have seen! If you have to stop, your hair will slowly revert to its previous state.
- Does this serum also remove DHT like the shampoo? Or is it made to do something else?
- Hi- Yes, it targets DHT similar to shampoo and also decreases scalp inflammation to help fight hair loss. Thank you!
- Will sudden stop of use of this product cause rapid loss as you noted would happen if someone was using a minoxidil based product?
- Hi- If you stop using our product, it will take about the same amount of time you have been using our product to get back to your pre-Zenagen state of hair loss. It will not make it worse, though. Thank you
- can I put hair color on after using this days before or should I wash my hair first?
- Yes, you can color your hair after using it. You don’t need to wait days, but it’s best to wash your hair before applying color to remove any residue from the serum. This helps the color apply more evenly. So just do a quick wash beforehand, skip heavy conditioners at the roots, and then proceed with your color.
- Do any of these products give a mentholated or tingly feeling to the scalp? I'm super sensitive to those products
- No—Zenagen products are not designed to create a mentholated or tingly feeling.
