# Genesis Fondant Renforçateur Conditioner

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Lightweight fortifying conditioner for weakened hair that is prone to falling due to breakage from brushing. For daily use.

4.6

(10646)

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Kerastase

Genesis Fondant Renforçateur Conditioner

Lightweight fortifying conditioner for weakened hair that is prone to falling due to breakage from brushing. For daily use.

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## FIND YOUR ROUTINE

You're only 2 mins from your ideal haircare routine. Try our online Hair Diagnosis for a professional experience at home

[TAKE QUIZ](/content/hair-quiz.html)

Get to Know the Product

## NEVER BE AFRAID OF FALLING.

​

The Genesis collection is professionally formulated to strengthen hair & reduce hair breakage.

97% LESS HAIR FALL DUE TO BREAKAGE FROM BRUSHING\*

+89% MORE NOURISHED HAIR\*\*

Genesis Fondant Renforçateur Conditioner by Kérastase is a lightweight, fortifying conditioner that strengthens weak hair and delivers intense nourishment with added shine.

To maximize the results, combine with the rest of the [Genesis range](/content/collections/genesis/index.html)

\*System of Bain Hydra-Fortifiant + Fondant Renforçateur+ Sérum Fortifiant vs Non-Conditioning Shampoo
\*\*vs. non-conditioning shampoo.

Product Benefits

## BENEFITS

### Reduces breakage

### Strengthens hair

### Nourishing

### Healthy Hair

Lightweight fortifying conditioner for weakened hair that is prone to falling due to breakage from brushing. For daily use.

Silicone and Sulfate Free

Intensely Moisturizes and Adds Body

Easily Detangles and Prevents Split Ends

Strengthens Hair Weakened by Heat Damage and Brushing

KER GENESIS BEFORE AFTER MULTIPLE EAN 1x1

KER GENESIS BEFORE AFTER MULTIPLE EAN 1x1

live

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### Subtitles

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HOW TO USE

## HOW TO USE

Apply to shampooed, towel-dried hair.

Leave on for 2 to 3 minutes.

Rinse thoroughly.

I love this conditioner! It's extremely lightweight, provides strength, and is great for daily use.

Ashley Sandgren \| @chic\_cheveux \| PR at Partners, Gainesville, VA

SCIENCE

## SCIENCE

DUAL-ACTION FORTIFYING SYSTEM

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root​

GINGER ROOT EXTRACT

Protects hair against daily external aggressors

CAFFEINE​

Helps improve scalp micro-circulation thanks to its stimulating properties.

ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

KER GENESIS 25 EFFICACY VIDEO 32s MULTIPLE EAN 1x1 VI

KER GENESIS 25 EFFICACY VIDEO 32s MULTIPLE EAN 1x1 VI

live

00:00CC

### Subtitles

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WHAT'S INSIDE

## FRAGRANCES

SUBLIMATION OF A WOODY CITRUS

The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh lime and bergamot zest opens the scent, followed by the soothing aroma of rose, and finally, the grounding depth of vetiver.

This captivating combination captures the essence of the outdoors, offering a revitalizing and empowering experience for your hair and senses.

## TOP NOTES

Lime, Bergamot Zest & Cedrat

## HEART NOTES

Rose, Bergamot Flower & Basil

## BASE NOTES

Vetiver, Musk & Tonka Bean

## TOP NOTES

Lime, Bergamot Zest & Cedrat

## HEART NOTES

Rose, Bergamot Flower & Basil

## BASE NOTES

Vetiver, Musk & Tonka Bean

## KEY INGREDIENTS

DUAL-ACTION FORTIFYING SYSTEM​

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root​

## GINGER ROOT EXTRACT

Protects hair against daily external aggressors

## CAFFEINE​

Helps improve scalp micro-circulation thanks to its stimulating properties.

## ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

## GINGER ROOT EXTRACT

Protects hair against daily external aggressors

## CAFFEINE​

Protects hair against daily external aggressors

## ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

Full ingredient list

WHAT'S INSIDE

## FRAGRANCES

SUBLIMATION OF A WOODY CITRUS

This captivating combination captures the essence of the outdoors, offering a revitalizing and empowering experience for your hair and senses.

## TOP NOTES

Lime, Bergamot Zest & Cedrat

## HEART NOTES

Rose, Bergamot Flower & Basil

## BASE NOTES

Vetiver, Musk & Tonka Bean

## TOP NOTES

Lime, Bergamot Zest & Cedrat

## HEART NOTES

Rose, Bergamot Flower & Basil

## BASE NOTES

Vetiver, Musk & Tonka Bean

## KEY INGREDIENTS

DUAL-ACTION FORTIFYING SYSTEM​

Enriched with a potent combination of Edelweiss Native Cells and Ginger Root​

## GINGER ROOT EXTRACT

Protects hair against daily external aggressors

## CAFFEINE​

Helps improve scalp micro-circulation thanks to its stimulating properties.

## ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

## GINGER ROOT EXTRACT

Protects hair against daily external aggressors

## CAFFEINE​

Protects hair against daily external aggressors

## ARGININE

This amino-acid has strong affinity to the hair's surface, making it the perfect ally to weakened hair

Full ingredient list

Frequently Asked Questions

## FAQ

### What are the benefits of Fondant Renforcateur Conditioner? How should I use it?What are the benefits of Fondant Renforcateur Conditioner? How should I use it?

Fondant Renforcateur reinforces hair fiber natural resistance to reduce the risk of hair fall due to breakage from brushing. It provides immediate strength and softness without weighing it down. Apply to shampooed hair, leave on for 2-3 minutes, and rinse thoroughly.

### Should I use Fondant Renforcateur Conditioner or Masque Renforcateur Hair Mask?Should I use Fondant Renforcateur Conditioner or Masque Renforcateur Hair Mask?

Use Fondant Renforcateur Conditioner daily for lightweight, intense moisture and strength. When your hair needs deep nourishment, use the Masque Renforcateur Hair Mask’s rich formula in place of a conditioner weekly or as often as needed.

### Can Fondant Renforcateur Conditioner be applied on the scalp?Can Fondant Renforcateur Conditioner be applied on the scalp?

Fondant Renforcateur Conditioner is meant to take care of lengths and ends. It provides hair with intense moisture and reinforcement to fight against hair fall due to repeated processing like brushing. We do not recommend applying on the scalp.

### What is the difference between hair-fall and hair-loss?What is the difference between hair-fall and hair-loss?

Hair-loss is defined by more than 100 strands falling from the roots per day due to the hardening of collagen hair shaft. Hair-fall is defined by more than 100 strands per day falling from the roots due to biological reasons (stress, hormones, diet…) OR by hair falling from breakage. Hair breakage is due to mechanical stressors such as brushing.

## THEY TRIED IT, THEY LOVED IT

Stronger Hair, Stronger Stories. See Genesis in action. #NeverBeAfraidOfFalling @kerastaseofficial

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Genesis Serum Texture

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Genesis shampoo texture

## GENESIS

DUAL-ACTION FORTIFYING HAIRCARE.

MORE STRENGTH. LESS BREAKAGE.

97% LESS HAIR FALL DUE TO BREAKAGE FROM BRUSHING\*

+89% MORE NOURISHED HAIR\*\*

[DISCOVER THE COLLECTION](/content/collections/genesis-more-strength-less-hair-breakage.html)

\*System of Bain Hydra-Fortifiant + Fondant Renforçateur+ Sérum Fortifiant vs Non-Conditioning Shampoo
\*\*vs. non-conditioning shampoo.

PDP Section Routine

## Complete Your Routine

At Kérastase, we believe in the power of a complete haircare routine. Discover the products of this range and maximize your results.

Best Seller

[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Bain Hydra-Fortifiant Shampoo](/content/collections/genesis/bain-hydra-fortifiant-shampoo.html)

Delicate fortifying shampoo for normal to oily, weakened hair that is prone to falling due to breakage from brushing.

[4.6](/content/collections/genesis/bain-hydra-fortifiant-shampoo.html)

Select a Size for Genesis Bain Hydra-Fortifiant Shampoo80 ml250 ml500 ml Value Size500 ml Refill Pouch

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Old priceNew price$48.00

Genesis Bain Hydra-Fortifiant Shampoo

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[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Bain Nutri-Fortifiant Shampoo](/content/collections/genesis/bain-nutri-fortifiant-shampoo.html)

Fortifying shampoo for normal to dry, weakened hair that is prone to falling due to breakage from brushing.

[4.7](/content/collections/genesis/bain-nutri-fortifiant-shampoo.html)

Select a Size for Genesis Bain Nutri-Fortifiant Shampoo250 ml500 ml Value Size

Add to cart

Old priceNew price$48.00

Genesis Bain Nutri-Fortifiant Shampoo

Bestseller

[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Fondant Renforçateur Conditioner](/content/collections/genesis/fondant-renforcateur-conditioner.html)

Lightweight fortifying conditioner for weakened hair that is prone to falling due to breakage from brushing. For daily use.

[4.6](/content/collections/genesis/fondant-renforcateur-conditioner.html)

Select a Size for Genesis Fondant Renforçateur Conditioner200 ml75 ml

Add to cart

Old priceNew price$52.00

Genesis Fondant Renforçateur Conditioner

Best Seller

[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Masque Reconstituant Hair Mask](/content/collections/genesis/masque-reconstituant-hair-mask.html)

Intense fortifying hair mask for weakened hair that is prone to falling due to breakage from brushing. For weekly use.

[4.7](/content/collections/genesis/masque-reconstituant-hair-mask.html)

One size only  for Genesis Masque Reconstituant Hair Mask

200 ml

Add to cart

Old priceNew price$70.00

Genesis Masque Reconstituant Hair Mask

Bestseller

[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

Professional-grade daily scalp serum that strengthens hair from the root to prevent breakage from brushing. Salon-quality fortifying treatment for at-home use.

[4.6](/content/collections/genesis/serum-fortifiant-hair-serum.html)

Select a Size for Genesis Serum Fortifiant Hair Serum90 ml30 ml

Add to cart

Old priceNew price$66.00

Genesis Serum Fortifiant Hair Serum

Bestseller

[WEAKENED HAIR](/content/collections/genesis/index.html)

### [Genesis Defense Thermique Heat Protecting Spray](/content/collections/genesis/defense-thermique-blow-dry-primer.html)

Lightweight leave-in spray to strengthen, heat protect, and prevent breakage for weakened hair.

[4.6](/content/collections/genesis/defense-thermique-blow-dry-primer.html)

One size only  for Genesis Defense Thermique Heat Protecting Spray

150 ml

Add to cart

Old priceNew price$52.00

Genesis Defense Thermique Heat Protecting Spray

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### Overall Rating

4.6

10646 Reviews

7289 out of 7914 (92%) reviewers recommend this product

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### Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.

Customers overwhelmingly praise these products for transforming hair texture and health, with most reporting noticeably softer, smoother, and stronger hair after just one use. Many highlight dramatic reductions in breakage and shedding, particularly with extended use. The luxurious, long-lasting fra...

[Show more](/content/collections/genesis/fondant-renforcateur-conditioner.html?dwvar_serum-fortifiant-hair-serum_size=90ML%2Fingredients#/index.html)

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#### Most Helpful Favorable Review

5 out of 5 stars.

### My hair is glowing!

Embabee

- Received an incentive

6 years ago

So about a year ago, I was going through something and I chopped my hair off, like just chop chop in my bathroom. I immediately regretted it. A whole year later my hair would not grow!!!!!!you really could not tell a difference in length! And in just the time that I started to use this hair care line I have been able to see so much growth! I don't know how much hair a person can grow in the span of two months but wow! I don't know if applying this serum to my roots helped something but oh my goodness I saw a difference! The only complaint was that the serum at times made my hair a little oily. But that could've been my fault. Maybe I went too crazy with the product! Ha! But other than that I loved the whole line and can't wait to get my hands on more!!!!

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99 people found this helpful

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#### Most Helpful Critical Review

1 out of 5 stars.

### Waste of Money

WhoCares

5 years ago

This did absolutely NOTHING for my hair. Didn't harm it, but no benefit. I waited until product was finished to write this review. Find this a gimmick and waste of my hard-earned money. There are some great Kerastase products that I use, sadly this is not one. Perhaps others might find it helps them.

Show Full Review

72 people found this helpful

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1 – 8 of 10646 Reviews

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LilCat

Phila pa

Reviews 3

Votes 0

Age45 to 54

Hair TypeFine

Hair LengthLong

Hair TextureFine

Hair ConcernBreakage

Hair ColorGrey

5 out of 5 stars.

### Again with this collection ❤️❤️❤️

20 hours ago

I have actually purchased this as gifts now for my daughter (yes the whole set) and my niece (whole set)! Once you try it, you will see! I think of all the years I’ve been buying kerastase, this is the first collection I reviewed!

Yes, I recommend this product.

Originally posted on [Genesis Bain Nutri-Fortifiant Shampoo](/content/collections/genesis/bain-nutri-fortifiant-shampoo.html)

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LilCat

Phila pa

Reviews 3

Votes 0

Age45 to 54

Hair TypeFine

Hair LengthLong

Hair TextureFine

Hair ConcernBreakage

Hair ColorGrey

5 out of 5 stars.

### My favorite of all kerastase!!

20 hours ago

I was lucky to have found kersastase when I was a young teen! I’ve used throughout my entire life whenever my needed a restart! Tried many collections, have never had one I disliked, but this one!!!!!!! So happy I found this and at this time of my life (perimenopause)
My hair has done a 180!!! It’s longer than it’s been since I was prego in my late 20s! I wash it, condition it, spray the terminique and let it air dry on my way to work! I LOVE THIS STUFF!!!!!! And the SMELL OMG THEIR VERY BEST YET!!!!

Yes, I recommend this product.

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LilCat

Phila, PA

Reviews 3

Votes 0

Age45 to 54

Hair TypeFine

Hair LengthLong

Hair TextureFine

Hair ConcernBreakage

Hair ColorGrey

5 out of 5 stars.

### My favorite of all their collections

20 hours ago

The SCENT!!! Oh my! People sniff me lol!
But aside from that, this whole collection has transformed my hair! It’s thicker stronger and just so pretty air dried!! Yes air dried everyday!
Read more reviews from other products I used if this collection!! It’s a must try!!

Yes, I recommend this product.

Originally posted on [Genesis Defense Thermique Heat Protecting Spray](/content/collections/genesis/defense-thermique-blow-dry-primer.html)

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JRC1975

Boston

Review 1

Votes 0

Age45 to 54

Hair TypeThinning

Hair LengthLong

Hair TextureCoarse

Hair ConcernBreakage

Hair ColorBrunette

4 out of 5 stars.

### Nice lather

22 hours ago

This gives my hair a very clean feeling. It lathers well and smells good. I need to use longer to see if it seems to be improving my hair strength and texture.

Yes, I recommend this product.

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Sillywyzerd

- Received an incentive

Oklahoma

Review 1

Votes 0

Age35 to 44

Hair TypeCurly

Hair LengthMedium

Hair TextureFine

Hair ConcernBreakage

Hair ColorBrunette

5 out of 5 stars.

### Love this

- Received an incentive

23 hours ago

Have noticed an extreme overall improvement in my hair health. It feels great.

Yes, I recommend this product.

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

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Rain06

- Received an incentive

Review 1

Votes 0

Age18 to 24

Hair TypeFine

Hair LengthMedium

Hair TextureFine

5 out of 5 stars.

### Very hydrating

- Received an incentive

a day ago

Smells amazing! Very hydrating! It cut my hairfall in the shower by half! As someone with fine hair, it hydrates without weighing down.

Yes, I recommend this product.

Originally posted on [Genesis Bain Nutri-Fortifiant Shampoo](/content/collections/genesis/bain-nutri-fortifiant-shampoo.html)

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Julie Lyrek

- Received an incentive

Review 1

Votes 0

5 out of 5 stars.

### This product is amazing!

- Received an incentive

a day ago

This product is amazing! Once a week I put this mask on, put on a shower hat. Then I let it "cook" for an hour or ? When I risnse it out, my hair is sooooo soft and silky. This really works!

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TyThomas

Denver Colorado

Review 1

Votes 0

Age35 to 44

Hair TypeDry

Hair LengthMedium

Hair TextureThick

Hair ConcernDry hair

Hair ColorBrunette

5 out of 5 stars.

### Masque

a day ago

I would definitely recommend this proud. I live in a dry state and It is the only product I have found that makes my hair feel soft and healthy.

Yes, I recommend this product.

Originally posted on [Genesis Masque Reconstituant Hair Mask](/content/collections/genesis/masque-reconstituant-hair-mask.html)

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1 – 8 of 10646 Reviews

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## Questions

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### Q: Hey! Is there anyway you can make a larger 500ML bottle of this conditioner?

Cccwe2a day ago

1 AnswerAnswer this Question

- **A:** Hi there!

We love how much you adore the Genesis Fondant Renforçateur Conditioner, and we completely agree that a larger 500mL format would be amazing to have on hand!

While our 500mL sizes are typically reserved for professional salon-sized shampoos or select lines, we will certainly pass your fantastic request along to our product development team.

In the meantime, feel free to check with your local Kérastase salon to see if professional-sized options or alternative refill formats are available for your favorite routine!

Le Carea day ago

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### Q: Hello, is this line pregnancy safe?

CW202625 days ago

Originally posted on [Genesis Bain Hydra-Fortifiant Shampoo](/content/collections/genesis/bain-hydra-fortifiant-shampoo.html)

1 AnswerAnswer this Question

- **A:** While our Genesis formulas are crafted to meet rigorous cosmetic safety and quality standards, questions regarding product use during pregnancy are deeply personal and best evaluated by your healthcare provider. We always recommend consulting with your OB-GYN or medical professional to ensure that any products you use align perfectly with your personal prenatal care.

If you have any general questions about our ingredients or need help exploring our collections, our customer care team is always here to assist you!

Le Care24 days ago

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### Q: is Genesis Bain Nutri-Fortifiant Shampoo safe on color treated hair?

paulrs4 months ago

Originally posted on [Genesis Bain Nutri-Fortifiant Shampoo](/content/collections/genesis/bain-nutri-fortifiant-shampoo.html)

2 AnswersAnswer this Question

- **A:** i have demi permanent color on my hair and this stripped the color of my hair causing to fade rapidly than one specifically meant for color treated hair. again, it's not permanent hair coloring but i can usually go 8 weeks using other formulas between color vs this which showed significant color change within 3-4 weeks.

sonz1073 months ago

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### Q: Does the defense thermique have UV protection?

RavenO4 months ago

1 AnswerAnswer this Question

- **A:** Yes, Kérastase Genesis Défense Thermique provides protection against the sun and environmental stressors, but it does so through antioxidant defense rather than traditional chemical UV filters.

Le Care4 months ago

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### Q: Where is the full ingredient list for this product?

AngelaL4 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** At Kérastase, we prioritize transparency regarding what goes into our formulations. You can find the full ingredient list for any of our products directly on their respective product pages at Kerastase.com under the 'What’s Inside' or 'Ingredients' section. For a deeper look into the science, safety, and origin of our ingredients, we invite you to visit the L'Oréal 'Inside Our Products' website. Please keep in mind that because formulations may be updated to provide you with the best performance, the most accurate and up-to-date ingredient list for your specific product is always located on the physical packaging (the bottle or box) of the item itself.

Le Care4 months ago

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### Q: Love this product, but could you please make a version of this product without the parfum

Georgie5 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** Hi there! Thank you for reaching out about our Genesis Serum Fortifiant Hair Serum. We are so happy to hear that you love the results of our Genesis Serum Fortifiant! Thank you for your feedback regarding the fragrance. We understand that many of our customers prefer fragrance-free options, especially for leave-in scalp treatments. While this specific serum is currently only available in our signature Genesis scent, we take all customer suggestions seriously and will certainly share your request for a "parfum-free" version with our research and development teams!

Le Care5 months ago

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### Q: I have Kerastase Stimuliste anti hair loss spray and genesis anti hair fall serum , which one should be applied first and how to use it efficiently??

Fang chosita6 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** For the most efficient results, we recommend applying the Genesis Anti-Hair Fall Serum first to a clean, dry or towel-dried scalp, as its lightweight formula is designed for deep absorption. Follow this with the Stimuliste Spray on any specific areas of concern. To maximize the benefits of both, section your hair before application and gently massage your scalp for 1–2 minutes to boost micro-circulation and help the active ingredients penetrate effectively.

Le Care5 months ago

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### Q: I put in organic rosemary oil in a carrier in my hair a few hours before I shower (for hair growth). Can I use this product after the shower, as I also get hair breakage in my brush. I want to be sure there is no conflict with the rosemary oil. I use.

KyleeBaby6 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** There is no conflict between using your pre-shower rosemary oil treatment and applying our Genesis Sérum Fortifiant after your shower. Our Genesis serum is specifically formulated to be used on a clean, towel-dried scalp to strengthen the hair at the root and reduce hair fall due to breakage. Using it after your shower will perfectly complement your growth goals while providing that essential daily fortification your brush needs.

Le Care6 months ago

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### Q: Is this product recommended for men?

sktu2346 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** Yes, absolutely. While the original Genesis line was initially marketed with a focus on women, the Serum Fortifiant Anti-Chute is highly effective and recommended for men experiencing hair thinning or hair fall.

Le Care6 months ago

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### Q: How many days does one bottle last? If using 4 doses/day?

An19456 months ago

Originally posted on [Genesis Serum Fortifiant Hair Serum](/content/collections/genesis/serum-fortifiant-hair-serum.html)

1 AnswerAnswer this Question

- **A:** One bottle of Kérastase Genesis Serum Fortifiant contains 90 ml (approximately 3.04 fl. oz.).

When using the recommended dosage of 4 doses (pipettes) once per day, the bottle is designed to last exactly 30 days.

Here is the breakdown of the usage:

Total Volume: 90 ml
Daily Dose: 4 pipettes (approximately 3 ml total per application)
Duration: 30 applications
To get the most out of your 30-day treatment, it is recommended to apply the 4 doses directly to a dry or towel-dried scalp, section by section, and massage it in gently. This daily consistency is key to the serum's clinical effectiveness in reducing hair fall from breakage.

Le Care6 months ago

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