Hair that has become brittle, weak, or prone to breakage has lost structural integrity at the protein level — the disulfide bonds that give keratin its strength have been degraded by chemical services, heat, age, or environmental stress. L'ANZA Healing Strength White Tea Shampoo addresses that degradation at the cleanse step: a professional strengthening shampoo that deposits Keratin Amino Acids, Dimethiconol Cysteine, and a quad-mineral CP Anti-Aging Complex during the wash, working to rebuild and reinforce the hair's protein structure rather than simply cleansing and rinsing away. Stronger, shinier, more resilient hair — starting at the shampoo step.

Healing Strength White Tea Shampoo is built on a professional surfactant system combined with L'ANZA's Keratin Healing System and CP Anti-Aging Complex — two proprietary active systems that work simultaneously during the wash.

Sodium C14-16 Olefin Sulfonate is the primary surfactant — an alpha-olefin sulfonate derived from natural fatty acids that produces a rich, dense lather for thorough scalp and hair cleansing. Cocamidopropyl Betaine and Sodium Lauroyl Methyl Isethionate are the mild amphoteric and isethionate co-surfactants that moderate the cleanse, improve lather quality, and leave the hair in better condition at rinse-out. Sodium Lauroyl Lactylate is a lactic acid-derived surfactant with inherent conditioning properties. Glycol Distearate provides the characteristic pearlescent, creamy texture.

Dimethiconol Cysteine is the formula's most sophisticated and distinctive active — a silicone-cysteine conjugate that is unique to L'ANZA's Keratin Healing System. Cysteine is the sulphur-containing amino acid that forms the disulfide bonds within the keratin protein chain — the crosslinks that are broken during bleaching, perming, and relaxing and that, once degraded, cause the hair to become structurally weak and prone to breakage. By conjugating Cysteine to Dimethiconol, L'ANZA creates an active that both deposits at the hair surface (via the silicone carrier) and reinforces the protein structure (via the Cysteine). The result is a strengthening deposit that works during the wash step rather than requiring a separate treatment. Keratin Amino Acids provide the complementary protein reinforcement — the building blocks of keratin that deposit directly into the hair's compromised protein matrix.

Camellia Sinensis (White Tea) Leaf Extract is the formula's hero antioxidant. White tea is harvested from the youngest buds and leaves of the tea plant before they fully open — at this stage the antioxidant and polyphenol concentration is at its highest, significantly exceeding that of green or black tea. White tea's free-radical scavenging ability directly addresses the oxidative damage that L'ANZA positions as the primary cause of premature hair aging — the progressive degradation of the hair's protein matrix and lipid structure through oxidative stress from UV, pollution, and chemical processing.

Entada Phaseoloides Bark/Seed Extract (Sea Bean / Matchbox Bean) is the formula's natural cleansing botanical — a plant saponin source that provides gentle, deep cleansing action at the scalp, removing impurities without stripping the natural oils and nutrients needed for healthy hair growth. Dimethiconol Meadowfoamate provides lightweight silicone conditioning with Meadowfoam Seed Oil-derived emollient properties.

L'ANZA's CP Anti-Aging Complex — Sodium PCA, Magnesium PCA, Zinc PCA, Manganese PCA — is a quad-mineral Natural Moisturising Factor complex. Each PCA salt delivers a specific mineral alongside the hygroscopic (moisture-attracting) properties of pyrrolidone carboxylic acid: Sodium PCA for baseline moisture retention; Magnesium PCA for scalp barrier support; Zinc PCA for sebum regulation and scalp health; Manganese PCA for antioxidant enzyme support. Together they maintain the scalp's own moisture environment through the wash step rather than depleting it. Sodium Hyaluronate (Hyaluronic Acid) provides additional moisture binding at the hair surface. Trimethylsiloxyamodimethicone and Silicone Quaternium-3 provide targeted silicone conditioning and surface smoothing at damaged cuticle points.

Sodium Benzotriazolyl Butylphenol Sulfonate is a UV filter that protects the hair's structural proteins and colour from photo-oxidative damage — directly relevant for hair that has already been weakened by chemical processing. Guar Hydroxypropyltrimonium Chloride provides in-wash conditioning slip. Tributyl Citrate acts as a film plasticiser that helps the active deposits remain flexible rather than brittle on the hair shaft.

Sulfate-free formulation note: the older L'ANZA Healing Strength formula used Sodium Cocoyl Isethionate (sulfate-free). The current litre formula uses Sodium C14-16 Olefin Sulfonate. Verify the formula on your physical stock before making a sulfate-free claim.

Metro Vancouver note: Hard water mineral deposits on the hair shaft accelerate the oxidative and structural degradation that Healing Strength is designed to address — minerals roughen the cuticle surface and create reactive sites for further oxidative damage. If results are less than expected, a chelation step before your wash routine will improve the shampoo's strengthening actives from reaching the hair shaft directly. See our Hard Water Hair Damage hub for the protocol.

Who It's For Weak, brittle, damaged, or chemically processed hair of any texture. Particularly effective for hair weakened by bleaching, colouring, perming, or relaxing — where disulfide bond degradation is the primary mechanism of damage. Also suited for fine hair experiencing age-related thinning and reduced resilience. Works on all hair types. Use daily or as needed. Follow with L'ANZA Healing Strength Manuka Honey Conditioner for the full Healing Strength system.

Key Ingredients

• Dimethiconol Cysteine — Silicone-cysteine conjugate; deposits at the hair surface while reinforcing disulfide bond integrity in the keratin chain — strengthening from both the surface and the structure simultaneously
• Keratin Amino Acids — Direct protein building blocks; deposit into the hair's compromised protein matrix during washing for cumulative structural reinforcement
• Camellia Sinensis (White Tea) Leaf Extract — Highest-antioxidant tea extract; neutralises the free radicals driving protein and lipid degradation and premature hair aging
• CP Anti-Aging Complex (Sodium, Magnesium, Zinc, Manganese PCA) — Quad-mineral Natural Moisturising Factor complex; maintains scalp moisture balance and provides mineral-specific scalp health support
• Sodium Hyaluronate — Hyaluronic acid; moisture binding at the hair surface
• Entada Phaseoloides Extract — Natural plant saponin; deep scalp cleansing without stripping vital oils
• Sodium Benzotriazolyl Butylphenol Sulfonate — UV filter; shields structural proteins and colour from photo-oxidative damage

How to Use Apply to damp hair. Lather and rinse thoroughly. Repeat if needed. Follow with L'ANZA Healing Strength Manuka Honey Conditioner.

Also available in 300ml →