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🌿 Unlock thicker, healthier hair with precision and science—because your scalp deserves the spotlight.
Dr. Groot Hair Thickening Serum is a clinically tested, Korean-inspired scalp treatment that reduces hair loss due to breakage by 82.2% in 2 weeks. Featuring a precision roll-on metal tip and menthol-infused gel, it nourishes, exfoliates, and balances scalp oil and hydration with a potent blend of biotin, rosemary, caffeine, and niacinamide—all free from parabens, silicones, sulfates, and gluten.









| ASIN | B0DK22L979 |
| Active Ingredients | salicylic_acid |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | #8,993 in Beauty ( See Top 100 in Beauty ) #26 in Scalp Treatments |
| Brand | Dr. Groot |
| Brand Name | Dr. Groot |
| Customer Reviews | 3.0 out of 5 stars 276 Reviews |
| Hair Type | Thinning |
| Item Form | Serum |
| Item Volume | 0.5 Fluid Ounces |
| Item Weight | 0.06 Kilograms |
| Item form | Serum |
| Item weight | 0.06 Kilograms |
| Manufacturer | Dr. Groot |
| Number of Items | 1 |
| Recommended Uses For Product | Hair Thickening, Reduces Oil, Strengthening |
| Scent | rosemary |
| Scent Name | rosemary |
| UPC | 803954310108 |
E**G
5/5 stars
I have a widows peak that was thinning, and it was an insecurity of mine when I put my hair up. Started applying for 1-2 months, and already see results!! It is working a bit too well and making my peach fuzzies on my forehead a bit thicker…. But I’ll take that over thinning hair
B**E
Barely anything in it!
Don’t be fooled by size!!! I never review things, but here I am. Listen to the other ppl saying it doesn’t last! Bc it doesn’t! I used this for 3 days! 3!!! It two small sections of my head-the front temple areas-morning and night. Went to use it this morning-completely gone. It did not leak. I have tried everything to get a drop out-nothing. It gave me one tiny pump and then nothing but dry. I really liked it bc it didn’t turn that section of my hair oily like others, and it didn’t leave a residue. But the amount of money it costs, for it to not even last a week, is extremely frustrating! I can’t imagine ppl using this long term!
J**S
Small amount but works great
Great product but the price is rough for the amount inside. I am purchasing again just wish it was cheaper or came with more.
M**I
Disappointed.
I was really excited for this product but when using it the solution would barely come out and eventually stopped coming out completely. Huge waste of money since I barely got any use out of it. Seems like there is an issue with the packaging used to disburse the solution.
A**L
Not much product
Not sure if it works I use it 3x and the product was gone I had read the reviews but I was very shocked how empty the bottle was so not really sure if this works. I want to keep trying but for the price and only 3x usage not sure if I want to risk it
Trustpilot
1 day ago
3 weeks ago