Kérastase Magic Power Duo: Genesis Anti-Hair-Loss Fortifiant Serum & 8H Magic Night Serum (90ml + 90ml)
Product description
If you’re trying to tackle both hair fall concerns and dryness at the same time, a duo makes more sense than buying two separate routines and hoping they “play nicely” together. The Kérastase Magic Power Duo pairs a fortifying serum from the Genesis line with Kérastase’s 8H Magic Night Serum, positioned for an intensive overnight care approach.
The Genesis part is aimed at fortifying as part of an anti-hair-loss routine. The night serum is designed for dry hair, with a lighter, non-greasy feel and niacinamide included for anti-dryness support. The key idea here is simple: you can use the day-to-night combination as a structured habit—something you’re more likely to stick with than a random assortment of products.
That said, it’s not a “one bottle fixes everything” situation. Night serums are best judged by how they fit into your sleep routine and how your hair responds over time, and anti-hair-loss claims tend to depend quite a lot on your starting point and consistency.
The essentials
This duo includes two 90ml serums: - A Genesis Anti-Chute Fortifiant Serum, built for a strengthening/anti-hair-loss focus. - A Nutritive 8H Night Serum, described as an ultra-nourishing repair serum for dry hair, designed to work intensely during the night.
Based on the provided description, the night serum’s role is especially clear: it’s formulated to deliver nourishment without feeling heavy, and it’s meant to help protect hair from friction (the kind you get from pillow contact) while restoring hydration for up to 8 hours.
What you’ll notice day to day
The most practical reason to consider this Magic Power Duo is that it’s set up as a two-step overnight routine. You’re essentially building a consistent “before bed” ritual:
For example, you could apply the fortifying serum as directed, then apply the 8H Magic Night Serum before sleep, section by section. If you’ve ever had products that leave hair feeling coated or greasy overnight, the “light and non-greasy” positioning of the 8H serum is exactly the sort of detail that matters.
It’s also a sensible choice if your hair issue is mixed: hair fall concerns alongside dryness or that rough, thirsty feeling. When both problems show up together, matching the routine (strengthening + intensive night nourishment) can be more convenient than managing them separately.
Key takeaways
The duo makes sense if you want a structured routine focused on strengthening and overnight repair. The 8H serum is designed to work while you sleep, with niacinamide aimed at supporting anti-dryness, and with a brief that it protects from pillow friction.
Worth noting: a serum duo won’t replace basic hair care fundamentals. If your hair is heavily heat-damaged, chemically treated, or your scalp needs attention beyond fortifying products, you may find a duo only partially addresses the problem.
Tech specs
- Name: Kérastase Magic Power Duo, Genesis Anti-Chute Fortifiant Serum 90ml and Nutritive 8H Night Serum 90ml
- Type: Hair serums (anti-hair-loss fortifying serum + overnight nutritive night serum)
- Capacity: 90ml + 90ml
- Volume/format: Two separate 90ml serums in a duo
How to use it
The description gives a clear bedtime approach: apply the night serum before going to bed, using the suggested amount and working section by section.
A practical way to fit this in: after your usual evening wash and towel-drying, set aside a couple of minutes to apply the serums evenly rather than rushing. Section-by-section application is one of those “small effort, better coverage” steps—especially with thicker hair or if you find some parts get ignored.
Be a bit cautious with how much you apply. Even when a product is described as non-greasy, overdoing it can make hair feel too slick or weighted for your liking.
Should you buy it?
Buy it if you want an overnight-focused routine that targets both hair fall concerns (Genesis fortifying) and dryness/repair (8H Magic Night Serum), and you’re happy following a consistent section-by-section application habit.
Skip it or look elsewhere if you only need one specific solution (for example, you don’t have dryness issues at all), if you dislike any overnight product feel even when it’s described as light, or if you’re expecting instant results from anti-hair-loss care without sticking to the routine.
It suits shoppers who prefer a paired, day-to-night style approach rather than mixing random products. And it can be a reasonable pick if you’re currently feeling that your hair looks or feels dry, but you’d rather correct that alongside a strengthening routine.
Mini FAQ
Is this duo only for dry hair?
The 8H Magic Night Serum is described for dry hair, while the Genesis serum is aimed at a fortifying, anti-hair-loss routine. So the duo is best matched to people who relate to both needs.
Does the night serum feel heavy?
The description specifically positions it as light and non-greasy, which is a good sign if you’ve struggled with overnight coatings before.
How long is the night serum supposed to work?
It’s described as having an intense action during 8 hours, supporting hydration overnight.
Do I need to apply it section by section?
The provided instructions suggest applying the anti-hair-loss serum in sections by section. Following that approach is likely to help with even coverage.