Shoppers Over 45 Noticed ‘Significantly’ Thicker Hair After 2 Weeks of Using This Serum — and It’s 25% Off

“It restored my hair to the best it has ever been.”

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Dakota Johnson Cyber Monday
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Full, healthy looking hair is anything but easy to achieve — especially for those who are prone to thinning hair. While genetics play a huge factor in hair loss, other underlying causes like stress, nutrition deficiency, and autoimmune disorders — like alopecia areata — can lead to excessive shedding and even gradual balding over time. Pinpointing and treating the exact cause is tricky and often frustrating, especially with the enormous volume of hair growth products promising an easy fix. 

While no single serum, oil, or shampoo will restore a mane overnight, there are brands out there that shoppers and celebrities alike trust for protecting their hair. For example, in preparation for the 2022 Met Gala, Dakota Johnson relied on René Furterer, a French haircare line that specializes in strengthening and anti-aging treatments for your tresses.

The Triphasic Reactional Concentrated Serum, however, is definitely one of the brand’s most buzz-worthy products. Formulated specifically for sudden hair thinning, this lightweight serum uses ingredients like niacin, which promotes blood circulation to follicles to encourage new hair growth across the scalp. The formula also includes scalp-cleansing essential oils like citrus and mint, which remove buildup linked to shrinking hair diameter. (BTW: This hair growth serum has hundreds of five-star reviews — and It’s 30 percent off for Cyber Monday)

Rene Furterer Triphasic Reactional Concentrated Serum

Rene Furterer

Buy It: René Furterer Triphasic Reactional Concentrated Serum, $58 with code MONDAYGIFT (was $78),

Best of all, many shoppers rave that it actually works, and some even call it a “blessing” for halting excessive shedding. “I can honestly say my hair looks great,” wrote one reviewer who saw a “significant difference” in the thickness of their hair after just two weeks of using the treatment. Another fan, who incorporated the treatment into their hair-care routine for a year, also remarked on the “tremendous” change in the growth of their mane. A final shopper simply noted that this product “restored [their] hair to the best it has ever been.”

NGL, this serum is usually a little pricey. Luckily, you can shop this “wonderful” treatment for 25 percent off along with René Furterer’s entire site during the brand’s massive Cyber Monday sale. Don’t miss the best sellers below:


Rene Furterer

Buy It: René Furterer Triphasic Strengthening Shampoo, $26 with code MONDAYGIFT (was $34),


Rene Furterer

Buy It: René Furterer Complexe 5 Stimulating Plant Concentrate, $41 with code MONDAYGIFT (was $54),


Rene Furterer

Buy It: René Furterer Triphasic Texturizing Conditioner, $27 with code MONDAYGIFT (was $36),

Shop More Editor-Approved Cyber Monday Deals:

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