All You Need To Know About Our Best Selling Kerastase Hair Serums
Hair serums.
What do they do? Who are they good for? Which scalp serum is right for you?
There are so many things to try and keep up with in the beauty industry. Especially now in the age of social media, where trends change on a weekly basis and buzzwords fly past us with every swipe of the screen. During your swipes you may have seen or heard the term “serum” and wondered about any of the questions listed above. So, I wanted to share some insight from your favorite Austin, Texas hair salon on the topic and hopefully steer you in the right direction toward your dream serum.
Generally speaking, hair serums are designed to address specific hair concerns like frizz, dryness, dullness, damage, or scalp stress. They can add smoothness to your hair, add shine, add heat protection during styling, repair split ends, or help balance out irritated scalps.
The right serum for you really comes down to your hair type and specific concerns. The most reliable way to decide what scalp serum is right for you is to ask your hairstylist for a professional recommendation at your next hair appointment. However not all of you are due for your next salon visit this month, so I thought it may be valuable to give you a little digital breakdown of our high performing, industry leading lineup of Kerastase serums.
Genesis Serum Fortifant
Hair type: Weakened hair
Use on: scalp and hair
Main function: Daily fortifying serum for weakened hair that is prone to falling due to breakage from brushing. (This is not a hair loss product, it’s an anti-breakage product*)
Benefits: Reduces breakage, hydrating, shine enhancing, strengthening
Premiere Serum Filler 
Hair type: Damaged hair
Use on: Mid-lengths to ends
Main function: This luxurious hair serum repels humidity, deeply nourishes hair, and locks out frizz. Protects from heat damage up to 450°F, visibly reduces the appearance of split ends, and provides stronger hair.
Key benefits: stronger hair, anti-breakage, smooth hair, shiny hair
Nutritive 8H Magic Night Hair
Hair type: Dry hair
Use on: Mid-lengths and ends
Main function: A luxurious overnight nourishing leave-in serum formulated with niacinamide that nourishes, hydrates, detangles, and enhances shine in 8 hours.
Key benefits: Hydrating, nourishing, shine enhancing, reduces tangles
Resistance Serum Therapiste
Hair type: Over processed/damaged hair
Use on: Mid-lengths and ends
Main function: Repairs very damaged hair fiber. Heat protectant with 450°F thermo-protection. Essential nutrition for healthy hair. Soothing texture for itchy scalp.
Key benefits: Repairs damage, heat protectant
Blond Absolu Serum Cicanuit Night Hair Serum
Hair type: All types of blonde hair
Use on: Mid-lengths and ends
Main function: Recovers & restores hair damage overnight. Protects against breakage and split ends. Hydrates hair for a luminous, smoother appearance
Key benefits: Reduces breakage, nourishes dry hair, strengthens hair
Resistance Serum Extentioniste
Hair type: Damaged hair, itchy scalp
Use on: Scalp
Main function: Energizing leave-in hair serum to stimulate and protect the scalp for healthy long hair.
Key benefits: Longer hair, healthier hair, soothes scalp
Blond Absolu Acid Serum
Hair type: All types of blonde hair
Use on: Hair and scalp
Main function: A repairing hyaluronic acid serum for blonde hair & moisturizer for the scalp. Instantly hydrates the hair immediately after blonding service, while soothing the scalp & preserving scalp moisture barrier.
Key benefits: Instantly hydrates, repairs, nourishes dry hair
Nutritive Nutri-Supplement Scalp Serum
Hair type: Dry hair or dry scalp
Use on: Scalp
Main function: A luxurious milky fast absorbing formula with a vitamin blend and niacinamide to moisturize dry scalp for immediate comfort, leaving the scalp healthy and refreshed.
Key benefits: Scalp hydration, nourishing
Nutritive Split End Serum
Hair type: Dry hair
Use on: Ends of hair
Main function: A high nutrition ultra-sealing split ends concentrate, powered by a vitamin-in-oil blend, that provides 2X less split ends and instant smoothness
Key benefits: Reduces split ends, nourishing, leaves hair soft
So there you have it. Each of the Kerastase serums we carry here at Urban Betty in a user friendly breakdown. I hope it gave you some insight as to the benefits this great family of products can bring you, and some direction on where to get started.
I actually set this blog post to support the January retail promotion we have going on at Urban Betty. This month only, all of our Kerastase serums are 30% off! So get on our calendar for January or stop into any of our Urban Betty locations to get your stylists personal guidance and to take advantage of this huge monthly discount while supplies last! (in-salon sale runs through end of day 1/31/2026)
