Kérastase Chronologiste Bain Régénérant Shampoo

This is a luxurious revitalizing shampoo engineered to deeply cleanse the scalp and restore vitality, smoothness, and bounce to aging, dull, or stressed hair.

Performance Rating: 8.3

The formula delivers strong cleansing and foaming capabilities through a primary surfactant system of Sodium Laureth Sulfate boosted by Coco-Betaine and Cocamide MIPA. To balance purifying power with hair conditioning, agents such as Polyquaternium-10 and Amodimethicone provide targeted cuticle smoothing, detangling, and frizz reduction without excessive heaviness. Scalp hydration and hair barrier reinforcement are further enhanced by Sodium Hyaluronate, soothing Bisabolol, 2-Oleamido-1,3-Octadecanediol (a biomimetic ceramide), and Alteromonas Ferment Extract. Together, these ingredients create a rich lather that thoroughly cleanses while leaving strands soft, manageable, and visibly revitalized.

Safety Rating: 7.3

The safety profile is well-regulated, supported by standard cosmetic preservatives such as Sodium Benzoate and Salicylic Acid, complemented by soothing Bisabolol and antioxidant Tocopherol. However, the reliance on Sodium Laureth Sulfate and various ethoxylated emulsifiers can occasionally cause mild dryness or irritation on sensitive skin. Furthermore, the inclusion of added Parfum / Fragrance alongside multiple fragrance allergens—including Limonene, Citronellol, Geraniol, Hexyl Cinnamal, and Benzyl Salicylate—presents a potential risk of contact sensitization. The inclusion of BHT also warrants standard caution, rendering the formulation dependable for normal use but less ideal for reactive scalps.

Final Rating: 7.8

The overall evaluation reflects a balanced cosmetic synergy between salon-grade performance and practical everyday safety. The product excels at effective purification, fiber smoothing, and moisture retention, utilizing high-foaming surfactants paired with conditioning silicones, biomimetic ceramides, and hyaluronic acid to revitalize dull or dry hair. Although the presence of sulfated cleansing agents and multiple fragrance allergens slightly restricts its compatibility for individuals with allergy-prone or sensitive scalps, it remains a robust, reliable cleanser that successfully marries deep clarifying action with cosmetic elegance and hair softness.

Verdict

The foundation of this formula is a sophisticated surfactant system led by Sodium Laureth Sulfate, balanced by Coco-Betaine, Laureth-5 Carboxylic Acid, and Cocamide MIPA. This combination produces a rich, velvety lather that effectively removes sebum, impurities, and environmental build-up without stripping the hair bare. The addition of Salicylic Acid provides gentle chemical exfoliation at the scalp level, helping to clear congested follicles and promote a healthy foundation for hair growth, while mild emulsifiers prevent post-wash tightness.

To counter potential dryness from cleansing agents, the formula integrates a targeted conditioning complex featuring Amodimethicone, Polyquaternium-10, and the lightweight ester Isostearyl Neopentanoate. Amodimethicone selectively binds to damaged areas of the hair fiber to restore softness, enhance light reflection, and minimize frizz without creating heavy residual build-up. Meanwhile, Polyquaternium-10 smooths the cuticle layer to improve wet detangling, leaving strands pliable, supple, and substantially less prone to mechanical breakage during brushing and heat styling.

What sets this formula apart is its targeted cocktail of regenerative actives designed for hair and scalp anti-aging. Key ingredients include Sodium Hyaluronate for deep moisture retention, Alteromonas Ferment Extract to soothe stressed skin, and Bisabolol to calm irritation. Additionally, the bio-engineered ceramide 2-Oleamido-1,3-Octadecanediol reinforces the intercellular lipid matrix of the hair shaft, while Tocopherol (Vitamin E) and Safflower Glucoside deliver essential fatty acids and antioxidant defense against environmental degradation.

Overall, this shampoo represents a high-performing salon-grade treatment that balances thorough clarifying power with deep fiber replenishment. However, the presence of sulfates and silicones may not suit those strictly adhering to low-poo or Curly Girl regimens. Furthermore, the inclusion of a complex fragrance blend containing allergens such as Hexyl Cinnamal, Limonene, and Benzyl Salicylate provides a high-end sensory experience but warrants a patch test for individuals with ultra-sensitive skin or fragrance allergies.

Who Is This Product For?

Who Should Avoid This Product?

Ingredient Evaluation

📁 Surfactants / 表面活性剂

🧪 Sodium Laureth Sulfate / 月桂醇聚醚硫酸酯钠

Purpose: Primary cleansing agent that produces rich lather and removes sebum and dirt.

Concerns: May cause dryness or mild irritation for very sensitive scalps.

Notes: An ethoxylated anionic surfactant that is milder and less irritating to the skin than Sodium Lauryl Sulfate (SLS).

🧪 Coco-Betaine / 椰油基甜菜碱

Purpose: Secondary amphoteric surfactant that boosts foam and reduces the irritation potential of primary surfactants.

Notes: Derived from coconut fatty acids and functions as an effective foam booster and mild cleanser.

🧪 Laureth-5 Carboxylic Acid / 月桂醇聚醚-5 羧酸

Purpose: Co-surfactant and cleansing agent providing mild emulsification.

Notes: An ether carboxylate surfactant that exhibits excellent dermatological compatibility.

🧪 Cocamide MIPA / 椰油酰胺 MIPA

Purpose: Non-ionic surfactant used as a foam stabilizer and viscosity builder.

Notes: A modern monoisopropanolamide alternative to Cocamide DEA, free from secondary amine impurities.

🧪 PEG-60 Hydrogenated Castor Oil / PEG-60 氢化蓖麻油

Purpose: Non-ionic emulsifying surfactant and solubilizer for fragrance and lipid components.

Notes: Derived from hydrogenated castor oil ethoxylated to facilitate dissolution of oil-soluble ingredients in aqueous bases.

📁 Conditioning Agents / 调理剂

🧪 Polyquaternium-10 / 聚季铵盐-10

Purpose: Cationic conditioning polymer that improves wet combing, reduces static, and provides slip.

Concerns: Can lead to minor buildup over prolonged use if not thoroughly cleansed.

Notes: A quaternized hydroxyethyl cellulose derivative widely used for hair substantivity.

🧪 Amodimethicone / 氨端聚二甲基硅氧烷

Purpose: Silicone polymer that selectively bonds to damaged areas of the hair cuticle to smooth and protect.

Notes: An amine-functionalized silicone designed to provide targeted conditioning with minimal heavy buildup compared to standard dimethicone.

🧪 Isostearyl Neopentanoate / 新戊酸异硬脂酯

Purpose: Emollient ester that imparts gloss, softness, and spreadability to the hair shaft.

Notes: Provides a light, non-greasy cushion feel and enhances hair shine.

🧪 PPG-5-Ceteth-20 / PPG-5-鲸蜡醇聚醚-20

Purpose: Emollient and conditioning surfactant that enhances product texture and hair softness.

Notes: An alkoxylated ether that functions both as a hair conditioning agent and clarity booster.

🧪 2-Oleamido-1,3-Octadecanediol / 2-油酰胺基-1,3-十八烷二醇

Purpose: Biomimetic ceramide analogue that reinforces and repairs the hair cuticle structure.

Notes: A patented synthetic ceramide known as Ceramide R, developed to restore intercellular cement in damaged hair fibers.

📁 Solvents / 溶剂

🧪 Aqua / Water / Eau / 水

Purpose: Acts as the primary vehicle and carrier for all dissolved components.

Notes: Deionized or purified water typically constitutes 70% to 85% of standard shampoo formulations.

🧪 Propylene Glycol / 丙二醇

Purpose: Solvent, humectant, and penetration enhancer.

Concerns: May cause mild irritation in individuals with compromised skin barriers.

Notes: Assists in maintaining product stability across varying temperatures.

🧪 Butylene Glycol / 丁二醇

Purpose: Solvent and humectant that aids in hydration and viscosity control.

Notes: A lightweight glycol with low irritation potential commonly used to solubilize botanical actives.

📁 Thickeners / 增稠剂

🧪 Sodium Chloride / 氯化钠

Purpose: Viscosity adjuster and thickening agent.

Notes: Builds viscosity in anionic surfactant systems by promoting micellar entanglement.

🧪 PEG-55 Propylene Glycol Oleate / PEG-55 丙二醇油酸酯

Purpose: Non-ionic thickener and consistency regulator.

Notes: Efficiently thickens hard-to-thicken mild surfactant formulations without clouding the solution.

📁 Active Ingredients / 活性成分与抗氧化剂

🧪 Sodium Hyaluronate / 透明质酸钠

Purpose: Powerful humectant active that binds water to hydrate the scalp and hair fibers.

Notes: The sodium salt form of hyaluronic acid with smaller molecular structure and better aqueous stability.

🧪 Bisabolol / 红没药醇

Purpose: Soothing active agent that helps calm scalp redness and irritation.

Notes: The primary active component found in German chamomile (Matricaria chamomilla).

🧪 Alteromonas Ferment Extract / 交替单胞菌发酵产物提取物

Purpose: Marine-derived bio-active that provides anti-pollution defense and skin-soothing benefits.

Notes: Obtained from deep-sea hydrothermal microorganisms, rich in exopolysaccharides.

🧪 Safflower Glucoside / 红花葡萄糖苷

Purpose: Botanical lipid-carbohydrate complex that nourishes the scalp and hair bulb.

Notes: Derived from Carthamus tinctorius to support hair follicle vitality.

🧪 Tocopherol / 生育酚

Purpose: Lipid-soluble antioxidant (Vitamin E) that protects formula oils and scalp from oxidative stress.

Notes: Naturally occurring Vitamin E, commonly utilized to inhibit lipid peroxidation.

🧪 BHT / 二丁基羟基甲苯

Purpose: Synthetic antioxidant that prevents formula degradation and rancidity of fragrance/lipids.

Concerns: Subject to strict cosmetic concentration limits due to potential sensitization concerns.

Notes: Typically employed at low concentrations (under 0.1%) to stabilize fragrance components.

📁 pH Adjusters / pH调节剂

🧪 Citric Acid / 柠檬酸

Purpose: Acidic pH regulator used to adjust product pH to a skin- and cuticle-compatible range.

Notes: An alpha hydroxy acid naturally derived from citrus fruits, essential for sealing hair cuticles.

🧪 Sodium Hydroxide / 氢氧化钠

Purpose: Alkaline neutralizing agent used to adjust formula pH.

Notes: Used in minimal amounts during manufacturing solely to balance formula acidity.

🧪 Sodium Citrate / 柠檬酸钠

Purpose: Buffering agent that works in tandem with citric acid to stabilize formula pH.

Notes: Also exhibits mild chelating properties that bind hard water metal ions.

📁 Preservatives / 防腐剂

🧪 Sodium Benzoate / 苯甲酸钠

Purpose: Antimicrobial preservative that inhibits fungal and yeast proliferation.

Notes: Most active at slightly acidic pH levels below 5.0.

🧪 Salicylic Acid / 水杨酸

Purpose: Preservative and mild keratolytic agent that clarifies scalp build-up and flaking.

Concerns: May cause minor dryness if used in excess on dry scalps.

Notes: A beta hydroxy acid (BHA) that functions both as a preservative booster and scalp-exfoliating active.

🧪 Benzyl Alcohol / 苯甲醇

Purpose: Preservative and solvent with broad antibacterial activity.

Concerns: Can trigger allergic contact dermatitis in sensitized individuals.

Notes: Listed among recognized EU fragrance allergens when present above threshold levels.

📁 Fragrance / 香精

🧪 Parfum / Fragrance / 香精

Purpose: Provides a pleasant scent and masks base surfactant odor.

Concerns: Common cause of contact allergies and skin sensitization.

Notes: Proprietary blend of aromatic raw materials and essential oils.

🧪 Benzyl Salicylate / 水杨酸苄酯

Purpose: Fragrance ingredient with floral and balsamic nuances, and fragrance fixative.

Concerns: Potential allergen required to be declared on cosmetic labels in many jurisdictions.

Notes: Naturally occurs in ylang-ylang and jasmine essential oils.

🧪 Hexyl Cinnamal / 己基肉桂醛

Purpose: Fragrance compound providing a jasmine-like floral aroma.

Concerns: Recognized contact allergen.

Notes: Widely used synthetic aroma chemical.

🧪 Limonene / 柠檬烯

Purpose: Fragrance component offering a fresh citrus scent.

Concerns: Oxidized limonene can be a significant contact sensitizer.

Notes: A natural terpene extracted mainly from citrus fruit rinds.

🧪 Citronellol / 香茅醇

Purpose: Fragrance constituent providing rose and geranium floral notes.

Concerns: Potential skin sensitizer.

Notes: Naturally present in rose, geranium, and citronella oils.

🧪 Geraniol / 香叶醇

Purpose: Fragrance compound imparting a sweet rose aroma.

Concerns: Known fragrance allergen.

Notes: A monoterpenoid alcohol found abundantly in rose and palmarosa oils.

🧪 Hydroxycitronellal / 羟基香茅醛

Purpose: Fragrance ingredient imparting sweet floral, lily-of-the-valley notes.

Concerns: Identified allergen regulated under cosmetic directives.

Notes: A classic perfumery aldehyde used to recreate muguet scents.