Blonde hair may be known for its luminosity, but that brightness needs the right care to last.

That’s why at Kérastase, we’ve redesigned Blond Absolu so it’s more than a collection – it’s a complete ritual created for all types of blonde hair. Powered by hyaluronic acid and antioxidant vitamins C and E, each formula helps hydrate, protect, and preserve your colour.

Below, discover how to keep blonde hair bright with the Kérastase Blond Absolu ritual – exploring the ingredients, formulas, and products we have designed specifically to care for blonde hair.

The challenges of being a blonde

The blonde struggle is real: heat styling, UV exposure, hard water, and chlorine can all affect how your hair looks and feels. Brassy hair creeps in, vibrancy fades, and your lengths can start to feel more like something you’re managing – rather than something you love.

Because of this, our Blond Absolu collection was redesigned around the demands and dynamics of the everyday blonde hair routine. The goal is to keep your colour looking bright between washes and appointments – and leave your lengths feeling soft and nourished.

The Blond Absolu ritual for lightened or highlighted hair

Our Blond Absolu collection is specifically for bleached, highlighted, and naturally blonde hair, combining immediate anti-brass toning with deep fibre repair to strengthen chemically damaged hair.

Meet the collection:

• Blond Absolu Bain Lumière Shampoo is a deeply hydrating formula that gently cleanses from root to tip, leaving hair feeling softer and looking naturally more luminous.
• Blond Absolu Cicaflash Conditioner is a dual-action treatment – part hair mask, part conditioner – that reconstructs the hair fibre to deliver lasting strength with a weightless finish.
• Blond Absolu Cicagloss Hair Oil Refillable is an ultra-hydrating oil concentrate designed for blonde hair repair, helping to strengthen compromised hair fibres and support hair weakened by bleaching or lightening.

Blonde Guard: your new blonde hero

Blond Absolu Blonde Guard is formulated to protect all types of blonde hair from its biggest aggressors (heat, UV damage, chlorine, salt water, and dehydration) – shielding against 99% of daily damage¹ before it can take hold.

Enriched with hyaluronic acid and vitamins E and C, this sophisticated leave-in treatment deeply hydrates dry hair while instantly counteracting brassiness and yellow undertones to reveal the ultimate bright blonde.

¹ Instrumental test after application of Blonde Guard against blonde aggressors: UV damage, heat, chlorine, and salt water.

California fresh

The scent captures the feeling of driving with the windows down and warm sunlight in your hair. It opens bright and citrus-sharp, softens into a clean floral heart, then settles into a smooth, airy finish that lingers all day.

• Top notes of orange blossom, bergamot, and mandarin.
• Heart notes of peony, fig, and laurel.
• Base notes of cedarwood, musk, and cardamom.

How to hydrate blonde hair: the ingredients that make it work

Vitamins C and E

Two of nature's most powerful antioxidants, vitamins C and E work together to keep blonde hair bright and protected. Vitamin C smooths the cuticle – the outermost layer of the hair fibre – so your hair reflects more light. Vitamin E provides antioxidant protection against heat, UV exposure, and pollution, all of which can weaken the hair fibre and dull blonde hair.

Hyaluronic acid

Hyaluronic Acid (HA) is a powerhouse hydrator – and in the Blond Absolu collection, it works on two levels:

• A low molecular weight penetrates deep into the hair fibre, improving strength and resilience from within.
• A high molecular weight works on the surface, smoothing the cuticle and delivering a visible plumping effect –benefiting both the inside and outside of the hair fibre.

Your blonde hair routine starts here. To learn more, explore our guide to caring for your blonde hair: from which blonde hair products to use, to exactly when to use them.