Sérum Énergisant

$129.00
  • Strengthens the bulb and protects the hair fiber
  • Boosts hair growth
  • Helps revitalize the scalp
  • Soothing scalp care
  • Shields the hair for an anti-pollution effect
  • Increases the density of the hair fiber
  • Alcohol free

Densifying Scalp Serum for Thinning Hair


Hair type: Thinning hair
99% Natural Ingredients
Natural Ingredients
Sulfate Free
Sulfate Free
Silicone/<wbr>Paraben Free
Silicone/Paraben Free
Cruelty Free
Cruelty Free
Vegan
Vegan
Gluten Free
Gluten Free
Made in France
Made in France
Quantity
Item is in stockHurry! Low inventoryItem is out of stock Item is unavailable

2 free samples of your choice with every order.

This high-performance serum, a true boost of vitality, is designed to help improve the appearance of thinning hair while supporting the look of fuller, denser strands.

Its ultra-concentrated, alcohol-free formula is enriched with rosemary and maca root extracts, known to help strengthen the feel of the hair fiber while keeping the scalp feeling fresh and purified creating an optimal environment for hair that appears stronger and more resilient. Indian gooseberry (amla) is recognized for its revitalizing properties, while green tea, rich in antioxidants, helps protect against environmental stressors that can affect the look and quality of the hair.

With its lightweight, non-greasy texture, the serum absorbs quickly without weighing hair down, making it ideal for daily use.

Proven Effectiveness:

  • Reduces hair loss and stimulates regrowth*
  • After just 15 days of use, improvements in hair health and vitality are clearly visible.
  • After 3 months of use: hair density is strengthened, and hair loss is slowed.

8 out of 10 users would recommend it to a friend or family member.

*Source: Self-assessment among men and women

  • Apply on clean, towel-dried hair using the dropper line by line and/or to the targeted area. Massage for 1 minute, and then style as usual.
  • Do not rinse.
  • In case of severe hair thinning, apply two to three times a week, for two to three consecutive months, and then gradually reduce the frequency of use.
  • To improve results, massage your scalp with the massaging scalp brush or with your head upside down to promote blood circulation.

Key Ingredients & Benefits

Green Tea
Anti-pollution

Indian Gooseberry
Revitalizing and Invigorating

Maca Extract
Fortifies, Protects

Full Ingredients

Aqua - *Glycerin - *Propanediol - *Lactic acid - *Curcuma Longa (Turmeric) Root Extract - Sodium Benzoate - *Sodium Levulinate - Parfum/Fragrance - **Carrageenan - *Rose Extract - *Glycyrrhiza Glabra (Licorice) Rhizome/Root - *Panthenol - *Cichorium Intybus (Chicory) Leaf Extract - *Galactorarabinan - *Salvia Hispanica Seed Extract - *Hydrolyzed Rhodophyceae Extract - *Xylitol - *Pentylene Glycol - *Trehalose - *Medicago Sativa (Alfalfa) Extract - *Humulus Lupulus (Hops) Extract - *Rosmarinus Officinalis (Rosemary) Extract - *Melilotus Officinalis Extract - *Sodium PCA - *Sodium Lactate - *Phyllanthus Emblica Fruit Extract - *Lepidium Meyenii Root Extract - *Camellia Sinensis Leaf Extract - *Arginine - *Linoleic Acid - *Aspartic Acid - *PCA - *Sodium Phosphate - *Pisum Sativum (Pea) Extract - *Caprylic Acid - *Caprylyl Glycol - *Glycine - *Alanine - Disodium EDTA - *Menthol - *Phytic Acid - *Valine - *Serine - *Dehydroacetic Acid - *Proline - *Threonine - *Isoleucine - *Biotin - *Palmitoyl Tetrapeptide-20 Amide - *Histidine - *Phenylalanine

*Natural Origin**Certified Organic

Our formulas may change. Please refer to the ingredients list on the product packaging for the most current formula.

It was by listening to her clients who were increasingly concerned by the problems of thinning and hair loss that Caroline Greyl asked her husband David Brooks to create an ultra-concentrated treatment to help women and men to have more texture and density. To do so, he has selected innovative and ecologically responsible ingredients with the greatest care. Tested by Leonor Greyl herself at her Parisian Institute, the formula immediately won over her and her entire team of experts. This serum is the perfect treatment to complete the brand's energizing range.

Ground shipping to USA addresses for $6.95. Orders of $75 or more qualify for free shipping.

Customers praised this lightweight, non-greasy serum for thinning hair, noting visible improvements in hair density, strength, and reduced shedding within 2-3 weeks. Many highlighted the pleasant scent and shine enhancement. Though expensive, shoppers felt it was "worth every penny" and effective for postpartum hair loss and stress-related thinning.

  • 5 stars: 46 (96%)
  • 4 stars: 2 (4%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
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Jiseon

I’ve been using it every other day for 3 weeks now. I don’t really see the difference in loss of hair, but it does make my hair shine and less grassy.

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James C.

This serum actually works! It's VERY expensive unfortunately :( Besides the insane cost, I love the texture and that it doesnt weigh my fine dry fragile thin hair down. The smell is not too strong and its pleasant which is a huge deal as I am very scent sensitive. I have medical issues which is contributing to hair fall and extreme stress. This serum has brought back hair around the face framing areas that was gone for over I think 10 + years! I saw a noticeable difference by the third week. Amazing! I SO WISH LEONOR GREYL would also bring back volume vivant spray , they would be great to use together .

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Anonymous

The Serum Energisant has done wonders for my hair's density. It also makes styling easier.

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Beegasp

This oil is not greasy and makes your hair grow! Within one month, along with the shampoo, I have lowered my hairline. My hair seems to be growing faster. Is a miracle!

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Anonymous

I love this serum!!!. I don't use it everyday so the bottle last a good while. I have very thin hair with damage and this serum has brought my hair back to life. It does not weigh my hair down or make it oily.
Definitely worth the price. Best Hair Serum EVER!!!!

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Kylie M.

This smells so DIVINE! I have noticed a difference in my hair health since starting this product. It is my favorite part of my hair routine!

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Marcia R.

As with all Leonor Greyl hair products, this one is true to its word--I noticed a difference after about 3 weeks of use. I highly recommend this product if your hair is like mine it--very fine and thinning.

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Mani

I'm highly impressed. Some would think that this is an overpriced serum for thinning hair and yes in this day and age it's expensive BUT sooooo worth it. I have had this habit of pulling my hair back tightly for years and notice my hair thinning. I used this for two weeks and notice a difference in volume after 14 days. The serum is so light and not oily. The fragrance is super light as well. I really like it...I received this complimentary for my honest review.

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Dani

This is my first time using a french brand and I am beyond excited, as i've seen it everywhere.And personally, i've heard of this hair oil as being amazing. So I can tell you right away, it is amazing. It's super lightweight I have fine hair and it doesn't make it oily or weighed down or gross or anything like that. It's actually really fine.Light easy oil to coat your hair, but without making it gross. It smells really nice a little bit.Goes a long ways, so this bottle's gonna last you. So far it's in my hair definitely looks shinier and it's only going to get healthier and healthier.

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Megha P.

I’ve only been using the Leonor Greyl Thinning Hair Serum for just over a week, but I’m already loving it! I have oily scalp and dry hair so I’m very picky with what I put in my hair but The serum is super lightweight and absorbs quickly, and the best part is the smell it’s amazing, so refreshing and not overpowering at all. I have received this complimentary by Leonor greyl and I’m so thankful for that cuz I would have never known I needed this! Even after such a short time, my hair feels stronger, and I’ve noticed less shedding. I’m excited to see how it works over time, but so far, I’m really happy with how it’s making my hair feel fuller and healthier!

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Megha P.

I’ve only been using the Leonor Greyl Thinning Hair Serum for just over a week, but I’m already loving it! I have oily scalp and dry hair so I’m very picky with what I put in my hair but The serum is super lightweight and absorbs quickly, and the best part is the smell it’s amazing, so refreshing and not overpowering at all. I have received this complimentary by Leonor greyl and I’m so thankful for that because I’d have never known I needed this! Even after such a short time, my hair feels stronger, and I’ve noticed less shedding. I’m excited to see how it works over time, but so far, I’m really happy with how it’s making my hair feel fuller and healthier!

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Sam

I love this hair oil. It smells absolutely amazing. It makes my hair look and feel so healthy. It screams luxurious and I absolutely adore it. Worth every penny. It doesn’t feel heavy and it doesn’t wear my hair down.

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Mandy q.

Complimentary from leonorgreylusa. This is a very nice hair oil . It’s lightweight and makes my hair so soft and shiny . I love it . If you’re looking to add some shine and also help with hair growth this is a great product for that .

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Ángela C.

The Leonor Greyl Luxury Serum for Thinning Hair is a game-changer. It feels incredibly lightweight yet deeply nourishing, leaving the scalp refreshed and hair stronger and healthier over time. It absorbs quickly without greasiness and has a subtle, elegant scent. Perfect for anyone seeking a high-end solution for thinning hair!

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jenny

Such a great hair serum! It has a subtle scent and a lightweight texture. When I apply it to my scalp and gently massage, it absorbs quickly. It doesn’t weigh my hair down, and my hair feels smoother and much more manageable.

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Olive1234

I tested the Luxury Serum for Thinning Hair gifted by Leonor greyl, it’s a really nice serum. I love the soft flowery fragrance it gives. I also love that it’s soothing and also lightweight when I put on my scalp

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Hairlover22

I tried the hair serum gifted by Leonor greyl and really like it. It is lightly fragranced and makes my hair soft and manageable. Love that it has a dropper to apply to my roots. It is lightweight and absorbs well

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Anonymous

I tried the hair serum gifted by Leonor greyl and really like it. It is lightly fragranced and makes my hair soft and manageable. Love that it has a dropper to apply to my roots. It is lightweight and absorbs well

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Karen.K

This hair serum comes in the most beautiful packaging. It looks so good on my vanity. I massage a few drops onto my scalp each night and while it is too soon to see results, I am feeling optimistic. The serum is very thin in consistency and does not have much of a smell. I also really like that it does not leave much of a residue or make my hair look greasy.

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miss.s.reviews

I’tm impressed with this Serum Energisant for Thinning Hair by Leonor Greyl. This product feels luxurious. The packaging and consistency of it is great and it doesn't leave my hair greasy. I like that the serum is brimming with natural botanicals and does not contain alcohol. I apply it to clean and damp hair after a shower and don't rinse it off. This is great for helping my postpartum hair become stronger and reduce hair loss. Also, the smell is so good. Very satisfied! Gifted by Leonor Greyl for my honest review.

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lovebugz04102

I was gifted by this Energizing Serum for Thinning Hair. This serum helps stop hair loss and helps stimulate hair growth. The serum isn't to thick and doesn't make my hair feel greasy at all. I just massage it in to my hair everyday. Super easy.

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review_by_kathyn

I used it on dry hair, it smoothed away the frizz and left my hair looking shiny and feeling so soft! When I used it on my wet hair, I felt like it helped protect my hair from the heat of my blow dryer and my hair came out shiny and smooth. Even the day after, when my hair is usually at its driest, it was still way more shiny and soft than usual. This oil also smells so nice. Needless to say, I'm in love.

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Feng.H

I tried the Luxury Serum for Thinning Hair and really liked it. It has a soft perfume scent and makes my hair feel soft and also scalp feels cooling. I like using it after the shower. This is also in a dropper so that’ts pretty nice

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Tianyi.Z

This is my first product from Leonor Greyl and I’tm obsessed! I love how refreshing my scalp feels after applying it every night. It smells really nice and I can feel my scalp become healthier and less greasy after a couple days. The glass bottle also makes it feel Lucious!

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babysealjunior

This serum is fantastic for addressing hair thinning. I was initially hesitant to apply it directly to my scalp, but I was pleasantly surprised to find that it doesn’tt weigh my hair down or make it greasy once it dries. The light scent is lovely, and after a week of use, I can already feel my hair becoming stronger. While I’tm not sure about visible hair growth yet - it may take more time - I’tm happy with the results so far.

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the.sweet.bird

I’tve just started using the Leonor Greyl SÉrum Energisant, and so far, I’tm really liking it. My hair is pretty fine, so I’tm always worried about products making it feel heavy or greasy, but this serum doesn’tt do that at all. It feels super lightweight, and my hair looks fuller without any weird residue or buildup. It also absorbs quickly and leaves my scalp feeling healthy, which I really appreciate. It’ts still too soon to say how it’tll work in the long run, but based on my initial experience, I’tm excited to keep using it. It feels gentle and doesn’tt overwhelm my hair or scalp, which is a big win. Plus, the scent is light and pleasant, not overpowering. If you’tre looking for something that boosts your hair without weighing it down, this is definitely worth a shot.

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Megan.G

This Leonor Greyl Energizing Serum for Thinning Hairserum is a lifesaver for my thinning hair! I've noticed a definite improvement in volume and strength since using it. It's lightweight, doesn't leave my hair greasy, and smells amazing. While it's a bit pricey, I think it's worth it for the results. If you're looking to boost your hair's health and vitality, give it a try!

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fadenrock

This hair serum smells amazing. It applies to my scalp well and absorbs quickly without feeling greasy. It helps my hair look healthier and shed less. The packaging is also luxurious, and the bottle looks sleek.

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bearxoo

like this hair oil it works really well and my hair felt softer and more healthier I definitely recommend it if you want your hair to grow fuller! If you feel like your hair is thinning out due to stress or bleach this is perfect for you! It’ts a game changer it instantly improved the way my hair felt and it’ts also very light weight now heavy at all.

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nayn_shi

I had the pleasure of testing out the Energizing Serum for Thinning hair and i can confidently recommend it! First off, the bottle and packaging is absolutely so gorgeous! The serum itself is thin and absorbs into the scalp quickly without leaving any sticky residue. It has a musky, amber scent that smells very luxurious and relaxing! This serum is such a treat to use everyday! For background reference, i have thin, ’ta, straight hair that is extremely damaged from years of bleach and color. This serum has helped me regrow my hair longer and thicker! I see lots of new growth of baby hairs along my hairline and my hair is a lot smoother and shinier. It totally helped bring back the life into my hair. You need to try this serum! Gifted by Leonor

Your most frequently asked questions

  • For a personalized routine tailored to your hair type and concerns, you can schedule a consultation with our Hair Care Concierge, complete our online hair quiz or contact us at info@leonorgreyl-usa.com.

  • All our products are manufactured in France.

  • Huile Régénérescence Naturelle and Crème aux Fleurs contain essential oils, while Bain Traitant à la Propolis contains piroctone olamine. These ingredients are not recommended for pregnant or breastfeeding women. As a precaution, we advise against using these products during pregnancy and breastfeeding. All other products are formulated to be safe and suitable during this period. If you have specific concerns, please consult your doctor.

  • None of our products contain silicones.