I have been using this for over six months along with the Densifique shampoo and conditioner. My hair fallout has SIGNIFICANTLY reduced. While it’s normal for hair to fall during the day, I used to lose more than your average bear. Perimenopause/menopause really keeps a gal on her toes. So. Much. Fun! Anyhoops, I also created a vitamin dupe blend of the most popular one marketed towards women during this stage of life. The price is pretty ridiculous so I broke down the label and sourced my own from this platform. I can get a three month supply of vitamins for the price of one of the brand name. This combo of items has helped my hair situation a lot. I lose maybe 3-5 hairs in the shower whereas before I was losing 20+. I also shed way less throughout the day. Before I would find my hair everywhere. Now that isn’t the case. The Densifique shampoo is also one of the best smelling shampoos I’ve ever encountered. I will never use anything else. It’s all expensive but sometimes a girl’s gotta do what a girl’s gotta do.
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This item: KÉRASTASE Initialiste Hair Serum, Hair & Scalp Treatment, Thickens, Strengthens & Prevents Damage, Adds Softness & Shine for Thin & Weakened Hair, 2.2 Fl Oz
$62.00 ($28.18/Fl Oz)
Get it as soon as Thursday, May 1
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$62.00 ($20.39/Fl Oz)
Get it as soon as Thursday, May 1
In Stock
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$48.00 ($28.24/Fl Oz)
Get it as soon as Thursday, May 1
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From the brand
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DISCOVER ELIXIR ULTIME
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Discover Première
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Shop By Hair Concern
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Ranges for all hair concerns
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PROFESSIONAL HAIRDRESSERS:
Kérastase is a leading global luxury professional haircare brand. Born in Paris in 1964, the brand has built its reputation on delivering exceptional performance on scalp and hair through exquisite products and personalized, in-salon treatments, all powered by scientific expertise.
Kérastase adopts a care-first philosophy to care for all hair types and all individuals, as well as the world we live in.
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Product Description
Professional Scalp Care
Initialiste
Our super hair serum transforms weak hair with active ingredients, strengthening the hair fiber and preventing future hair breakage.
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Expert Formulas
Powered by Gluco Peptide & Wheat Protein
- Gluco Peptide: Penetrates cuticle to strengthen hair
- Wheat Protein: Repairs elasticity & smoothness
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Fusio-Dose
Professional In-Salon Treatment
Instant Transformation, Infinite Possibilities.
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In-Salon Service
Your Appointment
Make an appointment in your Kérastase salon for a personalized hair diagnosis.
Initialiste Hair and Scalp Serum
- Strengthens hair & reduces hair breakage
- Softens & illuminates shiny hair
- For all hair types
Explore the Densifique & Initialiste Collections
 Bain Densite Shampoo |  Densite Conditioner |  Densimorphose Mousse |  Initialiste Serum | |
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Customer Reviews
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8,060
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2,179
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1,217
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552
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Price
| $44.00 | $48.00 | $48.00 | $62.00 |
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Hair Type
| Thinning hair | Thin or thinning hair | Thinning hair | Weak, thinning hair |
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Purpose
| Thickening shampoo | Thickening conditioner | Thickening hair mousse | Advanced scalp & hair serum |
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Benefit
| Cleanse, strengthen, densify | Detangle & thicken thin hair | Thickens, softens & adds shine | Add shine & reduce breakage |
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Key Ingredient
| Hyaluronic Acid & Peptides | Hyaluronic Acid & Intracylane® | Hyaluronic Acid & Peptides | Peptides & Wheat Protein |
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Usage
| With every wash | With every wash | Use after shampoo, then style | Use at least 3 times a week |
Works wonders!
Love this serum. Really helped with hair loss. Worth of money and smells amazing. If you experience hair loss you’d better try this product!
Top reviews from the United States
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- Reviewed in the United States on March 30, 2025
Love this serum. Really helped with hair loss. Worth of money and smells amazing. If you experience hair loss you’d better try this product!
Images in this review
- Reviewed in the United States on February 24, 2025
- Reviewed in the United States on March 25, 2025
- Reviewed in the United States on April 11, 2025
Top reviews from other countries
- KimberlyReviewed in Canada on March 15, 2015
I am a natural brunette but bleach my hair an ashy platinum blonde and this product helps strengthen my baby fine hair to preven
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