Both collections address hair damage, but at different structural levels. Résistance rebuilds the hair fibre from within using Vita-Ciment technology, restoring strength and elasticity to hair weakened by chemical services or mechanical stress. Première is Kérastase's most advanced repair system — the first collection formulated to dissolve calcium buildup within the hair structure, which is a primary cause of brittleness and breakage, before delivering deep restorative care. For severely compromised hair with significant calcium deposits, Première is the recommended starting point.

Spécifique is Kérastase's dedicated scalp care collection, designed to address a full spectrum of scalp imbalances including excess oiliness, dryness, sensitivity, dandruff, and hair thinning. Each product within the range is formulated to rebalance the scalp environment without compromising the quality of the lengths. For anti-dandruff concerns specifically, Symbiose provides clinically proven 7-week efficacy with the added benefit of deep hydration throughout the hair fibre.

Fusio-Dose is Kérastase's signature hyper-personalised in-salon treatment system. It pairs a universal base — available in hydration, strength, or shine variants — with a targeted booster concentrate selected according to the client's specific hair concern. The two formulas are blended by the stylist at the backbar and applied for a fully customised, instant-result ritual. The treatment can be adapted at every appointment as the client's hair needs evolve, making it a versatile and high-performance salon service.

Blond Absolu is Kérastase's dedicated collection for blonde, highlighted, and bleached hair. It combines deep violet-neutralising pigments with hyaluronic acid and edelweiss extract to eliminate brassiness, restore hydration, and rebuild fibre integrity compromised by lightening services. The range includes a purple shampoo and mask for toning, alongside a serum and leave-in treatment for daily protection and luminosity between salon visits.

Chroma Absolu is Kérastase's specialist collection for colour-treated hair. It is formulated to strengthen the hair fibre, seal the cuticle to prevent colour fading, and deliver long-lasting anti-frizz results. The range is available in variants for fine and medium hair as well as thick and coarse hair, ensuring targeted care regardless of texture. It is the ideal professional retail recommendation following any colour or toning service.

Curl Manifesto is Kérastase's dedicated collection for wavy, curly, and coily hair of all textures. Formulated with Manuka Honey, Ceramide, and Glycerin, it delivers intense, long-lasting hydration while defining curl pattern, reducing frizz, and preserving bounce and elasticity. The range covers every step of the curl routine — from a gentle cleansing system to leave-in creams and styling products — allowing stylists to build a fully personalised curl ritual for each client profile.

Densifique is Kérastase's specialist collection for hair that lacks density and volume. It works by thickening each individual hair strand using a combination of Hyaluronic Acid, Biotin, and Intra-Cylane, creating the visible appearance of fuller, denser hair over time. The range is available in formulas for women and men, and includes both at-home retail products and the Densifique Hair Density Programme — an intensive scalp treatment applied in a course of daily applications over four weeks for optimal results.

Fusio Scrub is Kérastase's professional scalp exfoliation service, designed to deeply cleanse and purify the scalp by removing pollution, product buildup, and dead skin cells. Available in three formulas — energising, apaisant (soothing), and detox — the ritual is customised to the client's scalp profile by the stylist. It is applied to wet hair prior to shampooing, massaged into the scalp, and rinsed before continuing with the chosen haircare routine. It is recommended as a monthly in-salon service to maintain scalp health and optimise the performance of subsequent treatments.

Soleil is Kérastase's dedicated hair care collection for sun-exposed hair. Formulated with UV filters and SPF-active ingredients, it protects the hair and scalp from UV damage, salt water, chlorine, and dryness caused by prolonged outdoor exposure. It is particularly recommended for clients who spend extended time in warm climates or engage in water sports, and serves as a targeted seasonal retail recommendation during summer months.

Kérastase education content — including collection deep-dives, application protocols, diagnostic techniques, and in-salon service guides — is accessible through the Education section of the L'Oréal Partner Shop. Kérastase regularly delivers both digital and in-person masterclasses covering scalp diagnosis, ritual customisation, and retail recommendation skills to support professional development across salon teams.

Full ingredient lists are available on the Product Detail Page (PDP) for every Kérastase product listed on the L'Oréal Partner Shop. Navigate to any product page and expand the "Ingredients" section within the product description area to view the complete INCI list. For specific allergen queries or professional safety data, please contact the L'Oréal Partner Shop support team directly.