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Genesis Anti Hair-Fall Fortifying Serum

Genesis Anti Hair-Fall Fortifying Serum

Product Description

Product overview

Made in Various INTERNATIONAL

A silicone-free, leave-in scalp serum formulated with 1.5% Aminexil, Ginger Root, and Caffeine to reduce hair fall caused by breakage from brushing. Its lightweight, jelly-like texture absorbs quickly without residue, strengthening weakened hair and anchoring follicles more firmly into the scalp for visibly fuller, healthier-looking hair in as little as 6 weeks.

Silicone-Free Paraben-Free Sulfate-Free 1.5% Aminexil Leave-In Treatment Lightweight Non-Greasy Clinically Tested Professional Grade
Pregnancy
Caution
Fungal Acne
Caution
Comedogenic
1/5
Type
Scalp Serum
Size
90 ml / 3 fl oz
Concern
Hair Fall
Treatment
6-Week Course
Application
Pipette Dropper
Real reviews · YouTube Shorts
Why it's different

Dual-Action Anti Hair-Fall

Simultaneously anchors hair at the root and strengthens the fiber to reduce breakage from daily brushing and styling.

01

Texture & feel

SENSORY
Consistency
Jelly-like Gel
Scent
Woody Bergamot Cologne
Absorption
Under 60 seconds
Finish
Lightweight, Non-Greasy

Dual-Action Anti Hair-Fall

Simultaneously anchors hair at the root and strengthens the fiber to reduce breakage from daily brushing and styling.

1.5% Aminexil Technology

L'Oréal-patented molecule prevents collagen hardening around hair follicles, keeping roots firmly anchored in the scalp.

Ginger Root + Caffeine Complex

Ginger Root protects against external aggressors while Caffeine boosts scalp microcirculation for healthier follicle environment.

Silicone-Free Lightweight Formula

No silicone build-up means weightless application that won't weigh down fine or thinning hair. Dries with zero residue.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding

Contains Alcohol Denat. as the second ingredient and Aminexil (Diaminopyrimidine Oxide) with limited pregnancy safety data. Consult your healthcare provider before use during pregnancy or breastfeeding.

Fungal Acne (Malassezia)

Contains PEG-40 Hydrogenated Castor Oil (an ester) which may feed Malassezia yeast. As a scalp-only product, risk is limited but those with scalp fungal issues should be cautious.

Low Comedogenic Risk

Rated 1/5 for comedogenicity. The lightweight water-based formula is unlikely to clog pores or cause scalp congestion.

Silicone-Free & Sulfate-Free

Free from silicones that can cause build-up and sulfates that strip hair. Safe for color-treated and chemically processed hair.

Fragrance Allergens Present

Contains Limonene, Linalool, Citral, Coumarin, Citronellol, Benzyl Salicylate, and Benzyl Benzoate. Patch test recommended for sensitive scalps.

Paraben-Free

Formulated without parabens. Preservative system relies on Piroctone Olamine, Benzyl Alcohol, and BHT instead.

Eye Contact Warning

Avoid contact with eyes. In case of contact, rinse immediately and thoroughly with water as directed by the manufacturer.

Alcohol Denat. (2nd Ingredient)

Denatured alcohol helps with fast drying and lightweight feel but may cause dryness on very sensitive or already dry scalps with extended use.

03

Ingredient breakdown

INGREDIENTS

Aminexil (Diaminopyrimidine Oxide) 1.5%Proven

L'Oréal-patented molecule structurally similar to Minoxidil. Prevents hardening of collagen around hair follicles, helping hair stay anchored more firmly in the scalp and reducing hair fall at the root.

  • Mechanism: Inhibits lysyl hydroxylase, preventing collagen rigidification around follicle sheath
  • Clinical Study: Rat model study in PMC compared Aminexil to 2% Minoxidil and found comparable efficacy in promoting anagen phase
  • Results Timeline: Visible reduction in hair fall typically observed after 6 weeks of daily use
Limited long-term safety data for pregnant or breastfeeding individuals. Consult a doctor if concerned.

Caffeine Active LevelProven

A well-studied stimulant that boosts scalp microcirculation when applied topically, helping bring nutrients and oxygen to hair follicles. May also counteract the effects of DHT on hair growth.

  • Study (2017): A 0.2% topical caffeine solution was found comparable to 5% Minoxidil for androgenetic alopecia in men
  • Mechanism: Stimulates microcirculation and may inhibit 5-alpha-reductase enzyme involved in hair thinning
  • Bonus: Strong antioxidant properties help protect follicles from oxidative stress
One of the most studied topical hair-growth ingredients alongside Minoxidil. Strong clinical evidence base.

Ginger Root Extract (Zingiber Officinale) Active LevelPromising

A traditional botanical ingredient known for its potent antioxidant and anti-inflammatory properties. Protects the scalp from environmental aggressors and soothes irritation.

  • Traditional Use: Used for thousands of years in Eastern medicine for hair and scalp health
  • Properties: Rich in gingerols and shogaols with anti-inflammatory, antimicrobial, and soothing benefits
  • Scalp Benefit: Helps create a healthier scalp environment that supports stronger hair growth

Arginine Active LevelProven

A semi-essential amino acid and natural building block of hair keratin. Has strong affinity for the hair's surface, making it ideal for reinforcing weakened fibers from root to tip.

  • Role: Primary building block of hair keratin and skin collagen
  • Mechanism: Cationic charge makes it substantive to negatively charged hair surface, forming a protective film
  • Scalp Benefit: As a natural moisturizing factor, it helps maintain scalp hydration

Niacinamide (Vitamin B3) Active LevelProven

A multi-functional superstar ingredient with clinically proven scalp-soothing, barrier-repair, and anti-inflammatory properties. Supports overall scalp health and hair growth environment.

  • Benefits: Anti-inflammatory, barrier repair, improves microcirculation, and brightening properties
  • Scalp Role: Strengthens the scalp's moisture barrier and calms irritation
  • Synergy: Works synergistically with Caffeine to enhance follicle nourishment

Resveratrol Trace LevelPromising

A powerful polyphenol antioxidant that protects scalp cells from free radical damage. Helps maintain a healthy follicle microenvironment for optimal hair growth.

  • Source: Naturally found in grape skins, red wine, and certain berries
  • Properties: Potent antioxidant and anti-inflammatory that fights oxidative stress at the follicle level

30 ingredients

Aqua/Water/Eau, Alcohol Denat., Diaminopyrimidine Oxide, Ammonium Polyacryloyldimethyl Taurate, Aminomethyl Propanol, Citric Acid, PEG-40 Hydrogenated Castor Oil, Piroctone Olamine, Caffeine, Arginine, Limonene, Niacinamide, Pyridoxine HCl, Linalool, Safflower Glucoside, Benzyl Salicylate, Coumarin, Citral, Benzyl Alcohol, Xylitylglucoside, Citronellol, Benzyl Benzoate, Anhydroxylitol, Xylitol, Zingiber Officinale Root Extract/Ginger Root Extract, Resveratrol, Tocopherol, BHT, Sodium Citrate, Parfum/Fragrance

FREE FROM: Parabens, Silicones, Sulfates (SLS/SLES), Mineral Oil, Phthalates, Formaldehyde, Hydroquinone, Retinoids, Oxybenzone
04

Where it fits in your routine

ROUTINE
1
Shampoo
2
Conditioner / Mask
3
Towel Dry
4
This Serum
5
Blow Dry / Air Dry
6
Style

Use once daily (AM or PM) on towel-dried or dry scalp. Can also be applied before bed on dry hair. Do not rinse. Best paired with the Genesis shampoo and conditioner for maximum results.

05

How to use

HOW TO USE
1

Section Your Hair

Part hair into 4 sections (center part + ear-to-ear) to expose the scalp areas where you notice the most thinning or hair fall.

2

Measure 4 Doses

Fill the pipette to the mark for 1 dose. Apply 4 doses total (1 per section) directly onto the scalp. Fine or short hair may only need 1-2 doses.

3

Massage Gently

Using fingertips, gently massage the serum into the scalp for 30 seconds to stimulate microcirculation and ensure even distribution.

4

Do Not Rinse

Leave in and style as desired. Blow dry or air dry. Use once daily for a minimum 6-week treatment period for optimal results.

06

Who is it for?

WHO

Perfect for you if:

  • You notice excessive hair fall when brushing or styling
  • Your hair feels weakened, thinning, or lacks density
  • You want a lightweight scalp treatment that won't weigh hair down
  • You prefer silicone-free, professional-grade haircare
  • You experience postpartum or stress-related hair fall
  • You want to prevent breakage and maintain hair fullness

Consider alternatives if:

  • You have genetic androgenetic alopecia (this addresses breakage, not genetic hair loss)
  • You are extremely sensitive to fragrance or alcohol-based products
  • You prefer fragrance-free formulas (this has a strong bergamot cologne scent)
  • You are looking for an instant length-growth product
  • You are pregnant or breastfeeding (consult your doctor first)
07

Hair type compatibility

SKIN TYPES
Fine / Thin Hair
Excellent

Ideal match. Lightweight, non-greasy formula won't weigh down fine strands. Silicone-free so no build-up. Use 1-2 pipette doses.

Normal Hair
Excellent

Works beautifully as a preventative treatment. Full 4-dose application absorbs without any residue or heaviness.

Thick / Coarse Hair
Good

Scalp benefits apply equally. May need the full 4 doses to cover all sections. Pair with Genesis Mask for added fiber strength.

Oily Scalp
Excellent

Non-greasy, quick-drying formula is perfect for oily scalps. Alcohol Denat. base dries fast without adding oiliness.

Dry / Sensitive Scalp
Moderate

Alcohol Denat. and multiple fragrance allergens may irritate very dry or sensitive scalps. Patch test first. Some users report itching.

Color-Treated Hair
Good

Sulfate-free and silicone-free formula is safe for color-treated and chemically processed hair. Will not strip color.

08

Results timeline

MONTH 2-3+
Week 1-2

Reduced Shedding During Brushing

Most users notice less hair collecting in their brush and shower drain. Scalp feels fresher and more stimulated from the caffeine and ginger root activation.

60% noticed less shedding
Week 3-4

Stronger, More Resilient Hair Fibers

Hair begins to feel stronger and less prone to snapping. The Aminexil is working to reinforce follicle anchoring. Hair has visibly more body and bounce.

72% reported stronger hair
Week 5-6

Visible Density Improvement

The recommended 6-week treatment period where clinical results become apparent. Hair looks visibly fuller and healthier. Breakage from brushing reduced by up to 97% (with full Genesis system).

84% less hair fall from breakage
Month 2-3+

Maximum Fullness & New Growth Visible

Continued use maintains and builds upon results. Baby hairs and new growth become visible at the hairline and part line. Overall hair volume and density is noticeably improved.

89% more nourished hair
09

Ratings by platform

430+ REVIEWS
Amazon
4.3
Rating
280+
Ratings
Main complaint: Authenticity concerns from third-party sellers and high price for small bottle that runs out in 3 weeks at full dosage
Sephora
4.2
Rating
150+
Reviews
Main complaint: Bottle empties too quickly when following recommended 4-pipette daily dose. Strong fragrance divides opinion.
Kérastase Website
4.6
Rating
200+
Reviews
Main complaint: Expensive for a 6-week treatment course. Some users need multiple bottles to complete the cycle.
Ulta
4.4
Rating
80+
Reviews
Main complaint: Takes patience to see results. Some sensitive scalps experienced itching from the formula.
10

Pros & cons

BALANCED

Praised

  • Clinically proven 1.5% Aminexil backed by L'Oréal research
  • Silicone-free and lightweight — perfect for fine or thinning hair
  • Non-greasy finish that doesn't weigh hair down or leave residue
  • Noticeable reduction in hair fall within 2-3 weeks for most users
  • Jelly-like texture is easy to apply without dripping or running
  • Professional-grade salon brand with luxury experience
  • Can be used on wet or dry hair, morning or evening
  • Compatible with color-treated and chemically processed hair

Criticized

  • Premium price point at $62 for a 90ml bottle
  • Bottle lasts only ~3 weeks at recommended 4-pipette daily dose
  • Strong bergamot/cologne fragrance that some find overpowering
  • Alcohol Denat. as second ingredient may irritate sensitive scalps
  • Some users experience scalp itching or tingling
  • Targets breakage-related hair fall only, not genetic hair loss
  • Requires daily commitment for minimum 6 weeks
  • Multiple fragrance allergens may trigger reactions
11

Budget-friendly alternatives (dupes)

DUPES
82% Match
Multi-Peptide Serum for Hair Density
$22.80
Budget Pick

Uses peptide complexes (Redensyl, Procapil, Capixyl, Baicapil, AnaGain) plus Caffeine instead of Aminexil. Different mechanism but similar goal of reducing hair fall and boosting density. Fragrance-free option available. 60ml bottle.

88% Match
Vichy Dercos Aminexil Clinical 5 Ampoules (Women)
$42.00
Similar Pick

Same 1.5% Aminexil active from L'Oréal Group sibling brand. Adds SP94 peptide and Octeine. Ampoule format (21x6ml) instead of pipette bottle. Hypoallergenic, dermatologist-tested, fragrance-free. Slightly more clinical approach.

68% Match
Nioxin Scalp & Hair Treatment System 2
$30.00
Budget Pick

Uses Niacin, Caffeine, and Activ-Renewal technology instead of Aminexil. Targets thinning hair from a different angle with a focus on cleansing and scalp health. Different mechanism but widely accessible and less expensive.

12

Comparison with competitors

SIDE-BY-SIDE

Vichy Dercos Aminexil Clinical 5

Key Active 1.5% Aminexil + SP94
Size 21 x 6ml (126ml total)
Format Individual Ampoules
Silicone-Free Yes
Fragrance Fragrance-Free
Cost/ml $0.33/ml
Multi-Peptide + HA Serum
Key Active Redensyl + Procapil + Capixyl
Size 60ml
Format Dropper Bottle
Silicone-Free Yes
Fragrance Minimal
Cost/ml $0.38/ml

Nioxin Scalp & Hair Treatment

Key Active Niacin + Caffeine + Sandalore
Size 100ml
Format Spray Nozzle
Silicone-Free No
Fragrance Yes (Peppermint)
Cost/ml $0.30/ml
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store at room temperature in a cool, dry place away from direct sunlight and heat. No refrigeration required.

Packaging

Glass bottle with graduated pipette dropper for precise dosing (1 dose = 1 pipette fill to the mark)

Travel Friendly

Yes, 90ml is under the 100ml carry-on limit. Glass bottle — pack carefully to avoid breakage.

13

Frequently asked questions

FAQ

This serum is not officially classified as pregnancy-unsafe, but caution is advised. It contains Alcohol Denat. as the second ingredient and Aminexil (Diaminopyrimidine Oxide), a molecule structurally related to Minoxidil, which has limited safety data for pregnant or breastfeeding individuals. It does not contain retinoids, salicylic acid, hydroquinone, or chemical sunscreens. We recommend consulting your OB-GYN or dermatologist before using this product during pregnancy or while breastfeeding.

Use with caution. The formula contains PEG-40 Hydrogenated Castor Oil, which is an ester that can potentially feed Malassezia yeast. However, since this is a scalp-only treatment (not applied to the face), the risk is lower than with facial products. If you have known scalp folliculitis or fungal acne on the scalp, consider a fungal-acne-safe alternative like The Ordinary Multi-Peptide Serum for Hair Density.

Yes, since this is a scalp-only leave-in treatment, it does not interact with facial skincare actives like retinol, vitamin C, AHA, or BHA. You can safely use your regular facial routine while using this serum on your scalp. Just avoid getting facial actives on your scalp at the same time, as the combination of Alcohol Denat. plus acids could cause irritation.

This serum is best suited for fine to normal hair that is weakened and prone to falling due to breakage from brushing. It excels on oily scalps thanks to its lightweight, fast-drying formula. It works on all hair types but is especially beneficial for those with thinning hair who want a non-greasy treatment. Those with very dry or sensitive scalps should patch test first due to the Alcohol Denat. and fragrance content.

Kérastase recommends a minimum 6-week daily treatment period. Most users report noticing less hair fall during brushing within the first 1-2 weeks. Visible improvements in hair density and strength typically appear around weeks 4-6. For maximum results with new growth visibility, continued use for 2-3 months is recommended. Results vary based on the cause and severity of hair fall.

Apply after shampooing and conditioning on towel-dried scalp (Step 4 in your routine), before blow-drying or air-drying. It can also be applied on dry hair/scalp at bedtime. Do not rinse out — it is a leave-in treatment. For best results, pair with Genesis Bain Hydra-Fortifiant Shampoo and Genesis Fondant Renforçateur Conditioner.

This serum has a low comedogenic rating of 1/5. It is a lightweight, water-based formula designed for scalp application. It does not contain heavy oils or silicones that typically clog pores. The fast-drying Alcohol Denat. base means minimal residue on the scalp. It is unlikely to cause scalp congestion or acne when used as directed.

The serum has a Period After Opening (PAO) of 12 months. However, at the recommended dose of 4 pipettes daily, one 90ml bottle lasts approximately 3 weeks. If using a reduced dose (1-2 pipettes for fine hair), a bottle can last 2-3 months. Store at room temperature away from direct sunlight for maximum shelf life.

— Skincarisma verdict
4.2 / 5 ★★★★☆

Verdict: Kérastase Genesis Anti Hair-Fall Fortifying Serum is a professionally formulated, clinically tested scalp treatment that delivers on its promise to reduce breakage-related hair fall. The 1.5% Aminexil, backed by L'Oréal's research, genuinely helps anchor hair follicles, while Caffeine and Ginger Root support a healthier scalp environment. The silicone-free, lightweight formula is ideal for fine and oily hair types. However, the premium price point ($62 for a bottle that lasts only 3 weeks at full dose), strong fragrance, and Alcohol Denat. content prevent it from being a perfect score. If you can budget for it and tolerate the scent, it's one of the most effective over-the-counter anti-breakage scalp serums on the market. For budget-conscious shoppers, the Vichy Dercos Aminexil ampoules offer the same core active at better value, while The Ordinary Multi-Peptide Serum provides a solid alternative at a fraction of the price.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 5 ingredient(s):
Citric Acid Caffeine Niacinamide Resveratrol Tocopherol
brightening Brightening from 2 ingredient(s):
Citric Acid Niacinamide
wound Promotes Wound Healing from 5 ingredient(s):
Citric Acid Arginine Niacinamide Zingiber Officinale Root Extract Tocopherol
ache Ache-fighting from 1 ingredient(s):
Niacinamide
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
1
oily-skin Oily/Acne-Prone Skin
2
sensitive-skin Sensitive Skin
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
33% 16% 50%

Product ingredient list

Showing first 5 of 30 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
1 Unknown
Water
Solvent, Skin Conditioning
0 Unknown
Alcohol Denat.
1 Unknown
Ammonium Polyacryloyldimethyl Taurate
Viscosity Controlling, Viscosity Increasing Agent, Emulsion Stabilising
0 Unknown
Aminomethyl Propanol
Buffering
2 A
Citric Acid
Masking, Fragrance, Chelating Agent, Ph Adjuster, Buffering Agent
brightening Brightening
anti-aging Anti-Aging
Promotes Wound Healing
Texture
Pores
VIEW ALL INGREDIENTS