











🌿 Unlock your scalp’s full potential—because thicker hair waits for no one!
Dr. Groot’s award-winning hair thickening serum is a clinically tested, Korean-formulated scalp treatment that reduces hair loss by 82.2%, improves hydration by 30%, and cuts scalp oil by 46.42%. Featuring a precision roll-on applicator and a refreshing menthol gel, it nourishes and revitalizes the scalp with biotin, caffeine, and other natural actives—free from parabens, silicones, sulfates, and gluten. Dermatologically safe for color-treated hair, it’s the go-to solution for fuller, healthier hair.




K**A
hair growth
I recently started using the Dr. Groot Hair Serum Pen, and I'm truly impressed! It's incredibly convenient and easy to use, allowing precise application exactly where I need it most. Within just a couple of weeks, I've noticed my hair feeling softer, smoother, and visibly healthier.The pen format makes it perfect for travel or quick touch-ups throughout the day, and it has a pleasant, subtle scent that's not overpowering. It absorbs quickly without any greasy residue.This serum has genuinely improved the overall health and appearance of my hair. Highly recommended!
A**R
Don't waste your money.
Product capacity is too little, high price, results are not like advertising. Don't waste y'all money
P**A
Hair growth
It been so amazing on my hair
A**M
Not enough product!
I didn't use this with the shampoo & conditioner, but even on its own it said that results will be shown in 2 weeks. However, the product didn't even last the 2 weeks to even show results. You're probably better off using just the shampoo & conditioner.
C**L
Love it
Love it
P**O
The Mr Groot Pen finishes FAST!! not worth the price
Mr. Groot has helped with the growth of my hair, although it has done nothing for my thinning/bald spots. Also the pen does not last long at all it is not worth the cost. I do love the serum it comes in a larger bottle and has helped my hair as well with growth. My problem is thinning hair so I continue to search for a product that truly works.
E**Y
Empty pen
This was the 2nd time I ordered this product I even got a subscription because the first time I loved the product but this second time I ordered it I got an empty pen nothing comes out so im definitely canceling that subscription im going to be paying to get empty pens.
S**
Trust the process and I'm going to buy again.
Relaxing to the scalp. It has a cooling sensation after putting it. It does have a herbal smell but it's not that bad at all it's a pretty normal for the organic contain ingredients of the product. I can't give it a five stars since I'm still in process of using the product and can't tell if it does help me with my hair loss. I know this product is in long term use to make it work.
Trustpilot
3 days ago
3 weeks ago