When you’re constantly finding more hair in your brush than on your head, the panic is real.
I have spent months analyzing the dual-action approach of this luxury line to bring you this comprehensive Kerastase Genesis review.
My intent is to help you understand if this pink-labeled powerhouse actually tackles hair fall at the root and the fiber or if it is just a high-end fragrance in a glass bottle.
You should buy the Kerastase Genesis Serum if you are ready to commit to a six-week ritual that transforms brittle, breaking strands into a resilient, glossy mane.
My experience with the Kerastase Genesis Serum

I remember the morning I hit my breaking point; I was blow-drying my hair for a work event, and the floor looked like a crime scene of snapped-off split ends.
I am someone who has always struggled with “seasonal shedding,” but this felt different—my hair felt weak, thin, and totally depleted of life.
I started using the Kerastase Genesis Anti-Chute Fortifiant Serum because I was tired of “band-aid” solutions that just coated my hair in silicone without fixing the underlying weakness.
The first thing I noticed was the scent; it’s a sophisticated, zesty blend of bergamot and lime that makes you feel like you’re getting a professional salon treatment in your own shower.
The serum itself is a lightweight, water-like liquid that comes with a glass dropper.
I was worried it would make my roots look greasy, especially since I have a naturally oily scalp, but it absorbed almost instantly.
Within the first week, my scalp felt more “awake” and refreshed, likely due to the caffeine and ginger root stimulating the micro-circulation.
By week three, the real magic started to happen. Usually, when I run my fingers through my hair, I expect a few strands to come loose.
Suddenly, that stopped. My hair felt “anchored” to my head in a way I hadn’t experienced in years.
The most impressive part was the reduction in breakage from brushing; my comb was finally coming away clean.
I didn’t just see less hair on the floor; I saw more “oomph” at the roots and a visible shine that made my hair look healthy even before I added any styling products.
It took a bit of discipline to apply those four pipettes every single night, but the results made it the most rewarding part of my self-care routine.
Maintenance and tips for your Genesis routine:

To get the absolute most out of your investment, you should follow the “four-step” protocol religiously.
- Always emulsify your shampoo: Since the Genesis Bains are concentrated, rub a nickel-sized amount between your wet palms until it turns into a thick foam before touching it to your scalp. This ensures the ginger root and caffeine are evenly distributed.
- Use the scalp massage technique: When you apply the serum, don’t just let it sit there. Use your fingertips to perform a firm, circular massage for two minutes. This “wakes up” the follicles and helps the Aminexil penetrate deeper into the scalp where it can do the most work.
- Section your hair for the serum: To ensure you don’t miss any spots, part your hair into four sections. Apply one full pipette along the part lines of each section. This prevents you from wasting product on the hair fiber where it isn’t needed and ensures the scalp is fully covered.
- Don’t skip the Heat Protectant: The Genesis Defense Thermique is a crucial part of the routine. Since the line targets breakage, using a heat protectant ensures that you aren’t undoing the serum’s hard work by scorching your strands with a flat iron.
- Commit to the 42-day cycle: Hair doesn’t transform overnight. The six-week mark is when the Aminexil has had enough time to influence the hair’s anchoring. If you stop at week two because you don’t see “new growth,” you are missing the entire point of the preventative technology.
Pros and Cons of using the Genesis system:

Pros of using the Genesis system:
- The Genesis line stands out because it doesn’t just treat the hair fiber; it treats the environment where hair grows.
- One of the biggest wins is the inclusion of Aminexil 1.5%, a powerful ingredient that helps prevent the collagen around the hair follicle from hardening, which is a major cause of premature shedding.
- I also love that the formula is completely silicone-free, meaning you get all the strength and hydration without the “plastic” buildup that eventually makes hair brittle.
- The addition of Ginger Root Extract acts as a shield against daily external aggressors like pollution and hard water, while the Caffeine provides that much-needed energy boost to the scalp.
- It is remarkably versatile; whether you have fine hair that gets weighed down easily or thick, dry hair that needs a mask, there is a specific “Bain” (shampoo) in the Genesis line for you.
- The serum is non-greasy and won’t ruin your blowout, allowing you to use it on dry hair if you forget to apply it while damp.
- Finally, the aesthetic and sensory experience are 10/10; the pink glass bottles look stunning on a vanity, and the fragrance lingers for a full 24 hours without being overpowering.
Cons of the Kerastase Genesis range:
- The price point is the most obvious hurdle: it is a significant investment for a hair care routine, especially since the serum requires consistent use over six weeks to see the best results.
- If you are someone who likes a “squeaky clean” feeling, you might find the shampoos to be almost too nourishing, requiring a double-wash to get that deep-clean sensation.
- The fragrance, while beautiful, is quite strong: if you are sensitive to perfumes or have a very reactive scalp, the botanical extracts might cause a slight tingle or irritation.
- Because it focuses on “hair fall due to breakage,” it is not a medical-grade solution for genetic balding or alopecia: it is vital to manage your expectations and realize this is a cosmetic and preventative treatment.
- The dropper can be a bit tricky to manage when the bottle gets low, often requiring you to tilt it at awkward angles to get the last few doses.
- Lastly, the product is so popular that it frequently goes out of stock at major retailers, making it difficult to maintain the consistency needed for the full six-week cycle.
Kerastase Genesis Vs. Other Brands
- Kerastase Genesis Vs. Olaplex

When we look at Kerastase Genesis compared to Olaplex, we are looking at two entirely different philosophies of hair repair.
Olaplex is a “bond-builder,” which means it uses a specific molecule to repair the broken disulfide bonds inside your hair that are caused by bleach and extreme heat.
If your hair is “mushy” or snapping because of a bad color job, Olaplex is your best bet.
However, Genesis is an “anti-fall” system that focuses on the hair’s attachment to the scalp and the overall strength of the strand.
While Olaplex fixes the damage you’ve already done, Genesis works to prevent the damage (and the shedding) from happening in the first place.
I find that Genesis leaves the hair feeling much softer and more “luxurious” than Olaplex, which can sometimes leave hair feeling a bit stiff if overused.
- Kerastase Genesis Vs. Redken Extreme

Redken Extreme is another heavy hitter in the world of anti-breakage, but it leans heavily on protein (specifically soy and wheat proteins).
Protein is great for filling in holes in the hair cuticle, but if you have “low porosity” hair, Redken can actually make your hair feel brittle and dry over time due to protein overload.
Genesis takes a more balanced approach by using ginger root and edelweiss cells for hydration alongside its strengthening agents.
Genesis also has a much more “prestige” feel; the experience of using the Genesis serum is far more enjoyable than the clinical, somewhat medicinal vibe of the Redken line.
If you want a product that feels like a spa day while it fixes your hair, Genesis is the clear winner.
Frequently Asked Questions (FAQs)
Yes, it is specifically excellent for hair that is prone to falling due to breakage and environmental stress, providing a dual-action approach of scalp stimulation and fiber reinforcement.
You will notice softer, shinier hair within the first week, but for the full anti-fall benefits and reduced shedding, you must use the serum consistently for at least 6 weeks.
It is designed for anyone experiencing hair fall from the roots or breakage through the lengths, particularly those with weakened hair due to stress, hormonal changes, or aggressive styling.
It depends on your goal: Olaplex is superior for repairing chemical/bleach damage, while Kérastase Genesis is better for daily strength, scalp health, and preventing hair fall.
Final Thoughts
Choosing the right hair care is a personal journey, but the data and my own experience show that this line is a top-tier contender for anyone fighting the “shedding” battle.
I have found that the combination of Aminexil and ginger root provides a level of protection that cheaper products simply cannot replicate.
However, you should buy Kerastase Genesis if you value a holistic approach that cares for your scalp as much as your split ends.
I believe that the confidence that comes from seeing less hair in the sink is worth every penny of the premium price.
You deserve to have a hair routine that feels like a ritual and delivers the resilient, healthy results you’ve been searching for.
