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MONAT IR Clinical™ Hair Thinning Defense Serum – Nourishes Scalp, Reduces Breakage, Boosts Hair Density, and Supports Thicker, Fuller-Looking Hair with a Lightweight, Non-Greasy Formula

  • Based on 132 reviews
Condition: New
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$84.60 Why this price?
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Jun 21
Order within 2 hours and 59 minutes
Available payment plans shown during checkout

Size: 1.7 Fl Oz (Pack of 1)


Features

  • [AWAKEN YOUR HAIR FOLLICLES] The Monat IR Clinical Hair Thinning Defense Serum is specifically designed to address the root causes of hair thinning, targeting the scalp directly to nourish hair follicles, stimulate growth, and fortify existing hair.
  • [INNOVATIVE FORMULA] Featuring a blend of powerful natural ingredients including melatonin, caffeine, and bioactive D-biotin, this hair thickening serum works to stimulate the follicles and strengthen hair from root to tip.
  • [NATURAL AND SAFE] MONAT IR Clinical Hair Thinning Defense Serum is naturally-based and features hair thickening technology that helps hair grow stronger and appear fuller.
  • [VISIBLE RESULTS] This lightweight, non-greasy serum immediately reduces breakage and reduces hair fall by 92%.
  • [AWARD-WINNING, VEGAN FORMULAS] MONAT is a leader in Premium Beauty, offering 100% vegan and cruelty-free products. Free from sulfates and parabens, MONAT's clean beauty formulas have earned multiple accolades, making them a trusted choice for healthy, ethical haircare.

Brand: MONAT


Scent: IR Clinical Hair Thinning Defense Serum


Item Weight: 0.11 Kilograms


Item Form: Lotion


Active Ingredients: CAPIXYL


Product Dimensions ‏ : ‎ 4.25 x 1.75 x 1.75 inches; 3.84 ounces


Item model number ‏ : ‎ MONAT


UPC ‏ :


Manufacturer ‏ : ‎ MONAT


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Works so good!
Size: 1.7 Fl Oz (Pack of 1)
Love love love this product! I had a balding spot where my part was for years, and now I have a few inches of hair growth there instead. Works great, does take some time tho. I’d recommend using for at bare minimum 60 days before deciding on anything. Good value for the money. Clean ingredients for hair growth. ... show more
Reviewed in the United States on June 11, 2025 by Zach Zach

  • Good Hair Growth Serum
Size: 1.7 Fl Oz (Pack of 1)
I was very skeptical about this product, but since my hair seemed to be fitting on top, I wanted to give it a try. After about two months of use consistently, I have a ridiculous amount of baby hairs popping up all around my head which tells me it is working! This stuff is expensive, but I think any really good working hair growth serum is going to be expensive and the investment is worth it for me. I’m 35 years old and noticed my hair was starting to become slightly thin on top. ... show more
Reviewed in the United States on May 15, 2025 by Gabby Gabby

  • It works
Size: 1.7 Fl Oz (Pack of 1)
I’ve been using this hair growth serum every day for a month, and I really like it. The dispenser is super convenient, there’s no smell, it’s not greasy at all, and it works! My hair stopped falling out, it feels healthier, and I can already see some baby hairs growing. It definitely worked for me.
Reviewed in the United States on May 20, 2025 by Olena Olena

  • It works
Size: 1.7 Fl Oz (Pack of 1)
I know it takes about 3 months to see a real difference it I feel like I can already see one after a month.
Reviewed in the United States on May 10, 2025 by Amanda zavislak

  • Works almost immediately
Size: 1.7 Fl Oz (Pack of 1)
Works within a few days of using it. I almost immediately noticed less hair shedding. No strong odor and does not make you hair greasy.
Reviewed in the United States on June 2, 2025 by Erin Hayes

  • Noticeable results in just a few days!
Size: 1.7 Fl Oz (Pack of 1)
The media could not be loaded. I’m pleasantly surprised by the results of this product! The serum has a lightweight texture, doesn’t weigh my hair down, and absorbs quickly. After just a few days of use, I noticed my hair became less brittle and the shedding reduced significantly. It has a gentle, non-overpowering scent, and the dropper is very convenient to use. I will definitely continue using it — my hair finally looks healthy and full of life. Highly recommend it to anyone struggling with hair thinning! ... show more
Reviewed in the United States on June 10, 2025 by Olha Borovska Olha Borovska

  • Teeny, tiny bottle!
Size: 1.7 Fl Oz (Pack of 1)
This better work to be worth nearly $100 bucks a month!
Reviewed in the United States on January 25, 2024 by Clementine

  • Love it
Size: 1.7 Fl Oz (Pack of 1)
I have thinning hair, so I started using this Serum. I’ve been using it for a month now. IMy hair looks fuller and I love that it doesn’t make my hair oily at all. My scalp feels much healthier, too. I’ve noticed that I’m losing less hair.
Reviewed in the United States on April 21, 2025 by Brooke Ann

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