Tea Tree Special Shampoo

This is a deeply clarifying and invigorating scalp shampoo formulated with tea tree, menthol, and potent cleansing surfactants to wash away heavy grease and buildup.

Performance Rating: 7.3

The formula delivers strong cleansing and refreshing benefits driven by a potent surfactant blend of Sodium C14-16 Olefin Sulfonate, Sodium Lauryl Sulfate, and Cocamidopropyl Betaine, creating a rich lather that effectively eliminates buildup and excess sebum. Conditioning agents like Panthenol and Polyquaternium-7 help offset potential dryness by providing slip and moisture retention. Additionally, Melaleuca Alternifolia (Tea Tree) Leaf Water, Menthol, and Menthyl Lactate offer a revitalizing, cooling scalp sensation. However, the aggressive cleansing system may be excessively stripping for dry or color-treated hair, balancing its overall functional performance.

Safety Rating: 4.7

The safety profile is noticeably lowered due to several high-risk irritants and sensitizers. The combination of Sodium Lauryl Sulfate with harsh isothiazolinone preservatives, specifically Methylchloroisothiazolinone and Methylisothiazolinone, presents a well-documented risk of contact dermatitis and skin sensitization. Furthermore, the inclusion of concentrated fragrance elements, essential oil fractions, and specific allergens such as Linalool, Limonene, Geraniol, Coumarin, and Turpentine increases the potential for allergic reactions. Synthetic dyes like Yellow 5 and Blue 1 also add to the cumulative irritancy burden for sensitive individuals.

Final Rating: 6.0

The final evaluation reflects a compromise between high-efficiency clarifying capability and a formulation prone to irritation. On one hand, the shampoo excels at deep cleansing, scalp invigoration, and oil removal, making it effective for clarifying routines. On the other hand, the presence of potent sulfates, allergenic fragrance compounds, and sensitizing preservatives significantly restricts its gentleness and daily suitability. The resulting product is best viewed as a robust clarifying wash that requires caution for those with sensitive skin or compromised scalps, yielding a balanced, moderate composite standing.

Verdict

This shampoo is built around a high-foaming, heavy-duty cleansing system powered by Sodium C14-16 Olefin Sulfonate and Sodium Lauryl Sulfate (SLS), balanced slightly by gentle Cocamidopropyl Betaine. This powerful surfactant combination excels at cutting through stubborn sebum, environmental grime, silicones, and heavy styling residue. It provides an exceptionally thorough, squeaky-clean wash that instantly revives weighed-down hair roots and clarifies congested scalp pores without leaving any greasy or heavy film behind on the hair shaft.

To complement its robust cleansing action, the formula incorporates Melaleuca Alternifolia (Tea Tree) Leaf Water, Menthol, and Menthyl Lactate. These botanical and cooling agents deliver an immediate, refreshing tingling sensation across the scalp that stimulates microcirculation and helps calm temporary itchiness. The addition of Panthenol (Pro-Vitamin B5) and Polyquaternium-7 introduces lightweight slip and moisture retention, which helps mitigate some of the roughness and friction that typically follows intense sulfate cleansing.

Despite its revitalizing properties, the formula contains several ingredients that require caution for certain hair and scalp profiles. The inclusion of Sodium Lauryl Sulfate means this shampoo can be excessively stripping for moisture-depleted hair, leading to moisture loss or premature fading on color-treated hair. Furthermore, the formula utilizes the potent preservative pair Methylchloroisothiazolinone and Methylisothiazolinone (MCI/MI), alongside a complex array of natural fragrance terpenes like Linalool, Limonene, and Pinene, which pose a notable risk of contact dermatitis or allergy triggers.

Overall, this product serves as an exceptional clarifying treatment for individuals dealing with excess oiliness, stubborn flakes, or severe product accumulation. While it may prove too aggressive for daily maintenance on normal or delicate hair textures, using it as a weekly detoxifying wash offers an effective, spa-like scalp reset. Those with healthy, resilient scalps seeking an energizing and deeply purifying shower experience will find this formulation remarkably effective and thoroughly refreshing.

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Ingredient Evaluation

📁 Surfactants / 表面活性剂

🧪 Sodium C14-16 Olefin Sulfonate / C14-16 烯烃磺酸钠

Purpose: Primary cleansing agent and foam booster

Concerns: Can be drying or stripping to sensitive or dry scalps in high concentrations.

Notes: Often used in sulfate-free formulations as a strong clarifying surfactant.

🧪 Cocamidopropyl Betaine / 椰油酰胺丙基甜菜碱

Purpose: Secondary surfactant and foam stabilizer

Concerns: May cause contact dermatitis in individuals sensitive to manufacturing impurities like 3-dimethylaminopropylamine.

Notes: Mild amphoteric surfactant that helps reduce the irritation potential of primary anionic surfactants.

🧪 Sodium Lauryl Sulfate / 月桂基硫酸钠

Purpose: Primary surfactant and high-foaming cleansing agent

Concerns: Known to cause skin and eye irritation or disrupt the skin moisture barrier with prolonged exposure.

Notes: A very effective degreaser, often paired with milder co-surfactants to mitigate irritation.

📁 Thickeners / 增稠剂

🧪 Acrylates/C10-30 Alkyl Acrylate Crosspolymer / 丙烯酸(酯)类/C10-30 烷醇丙烯酸酯交联聚合物

Purpose: Viscosity controller and emulsion stabilizer

Notes: A synthetic polymer that provides a smooth gel-like consistency and holds suspensions stable.

🧪 Glycol Stearate / 乙二醇硬脂酸酯

Purpose: Opacifying agent, pearling agent, and emulsifier

Notes: Gives shampoos and body washes a characteristic milky or pearlescent visual appearance.

🧪 PEG-150 Distearate / PEG-150 二硬脂酸酯

Purpose: Thickener and non-ionic emulsifier

Concerns: May contain trace amounts of ethylene oxide or 1,4-dioxane from the ethoxylation process.

Notes: High molecular weight polyethylene glycol diester commonly used in surfactant cleansers to build viscosity.

📁 Active Ingredients / 活性与调理成分

🧪 Melaleuca Alternifolia (Tea Tree) Leaf Water / 互生叶白千层(茶树)叶水

Purpose: Antimicrobial and soothing botanical distillate

Concerns: Botanical extracts can occasionally trigger allergic contact dermatitis.

Notes: A gentler, aqueous form of tea tree, commonly included for scalp-clarifying benefits.

🧪 Panthenol / 泛醇(维生素原B5)

Purpose: Provitamin B5 humectant and hair conditioning agent

Notes: Penetrates the hair shaft and scalp to provide lasting hydration, shine, and elasticity.

🧪 Polyquaternium-7 / 聚季铵盐-7

Purpose: Antistatic and hair conditioning polymer

Concerns: Can cause mild product buildup over time on very fine hair.

Notes: A cationic copolymer that improves wet combing, detangling, and hair softness without heavy greasiness.

🧪 Menthyl Lactate / 薄荷醇乳酸酯

Purpose: Long-lasting cooling and soothing sensory agent

Notes: A derivative of menthol that offers a milder, more sustained cooling sensation with less odor.

🧪 Menthol / 薄荷醇

Purpose: Cooling agent, refreshing scent, and scalp stimulant

Concerns: Can cause stinging or sensitization on broken or hypersensitive skin.

Notes: Stimulates cold-sensitive receptors in the skin to produce a refreshing sensation and increase blood flow.

📁 pH Adjusters / pH调节剂与螯合剂

🧪 Water (Aqua, Eau) / 水

Purpose: Solvent and formula base

Notes: Typically comprises 60–85% of standard liquid shampoo formulations.

🧪 Citric Acid / 柠檬酸

Purpose: pH adjuster and buffer

Notes: Maintains an optimal acidic pH (typically 4.5–5.5) to keep the hair cuticle smooth.

🧪 Sodium Hydroxide / 氢氧化钠

Purpose: Alkaline pH adjuster

Notes: Used in minute quantities to neutralize acidic thickeners like carbomers and reach target pH.

🧪 Tetrasodium EDTA / 乙二胺四乙酸四钠

Purpose: Chelating agent

Notes: Binds hard water metal ions to prevent formula degradation and improve foaming performance.

📁 Preservatives / 防腐剂与稳定剂

🧪 Sodium Benzoate / 苯甲酸钠

Purpose: Preservative active against fungi and yeast

Notes: Most effective in acidic formulations below pH 4.5–5.0.

🧪 Methylchloroisothiazolinone / 甲基氯异噻唑啉酮

Purpose: Broad-spectrum antimicrobial preservative

Concerns: Known contact allergen; restricted to rinse-off cosmetics with strict concentration limits.

Notes: Commonly supplied in a 3:1 mixture with Methylisothiazolinone (Kathon CG).

🧪 Methylisothiazolinone / 甲基异噻唑啉酮

Purpose: Broad-spectrum preservative

Concerns: Significant potential for skin sensitization and contact dermatitis.

Notes: Banned in leave-on products in many regions, strictly regulated to 15 ppm in rinse-off formulations.

🧪 Magnesium Nitrate / 硝酸镁

Purpose: Stabilizer for isothiazolinone preservatives

Notes: Present primarily as an auxiliary component to keep CMIT/MIT complexes stable in storage.

🧪 Magnesium Chloride / 氯化镁

Purpose: Preservative stabilizer and auxiliary viscosity adjuster

Notes: Works alongside magnesium nitrate to stabilize halogenated isothiazolinone blends.

📁 Fragrance / 香精与芳香成分

🧪 Fragrance (Parfum) / 香精

Purpose: Aroma and odor masking

Concerns: Undisclosed mixture that can trigger allergic reactions in fragrance-sensitive individuals.

Notes: Proprietary blend of natural and synthetic scent compounds.

🧪 Lavandula Oil/Extract / 薰衣草油/提取物

Purpose: Natural fragrance and botanical aroma component

Concerns: Can cause oxidation-related contact allergy on sensitive scalps.

Notes: Imparts a relaxing floral-herbal scent.

🧪 Linalool / 芳樟醇

Purpose: Floral fragrance compound

Concerns: Declared allergen; oxidizes in air to form skin-sensitizing hydroperoxides.

Notes: Naturally occurring in lavender, citrus, and mint oils.

🧪 Linalyl Acetate / 乙酸芳樟酯

Purpose: Sweet floral/citrus fragrance component

Notes: A major naturally occurring ester found in lavender and bergamot essential oils.

🧪 Terpineol / 松油醇

Purpose: Lilac/pine-like fragrance ingredient and antibacterial component

Notes: Common constituent of pine and tea tree oils.

🧪 Pinene / 蒎烯

Purpose: Woody/pine fragrance component

Concerns: Can cause skin sensitization upon oxidation.

Notes: Major bicyclic terpene present in pine, conifer, and tea tree extracts.

🧪 Beta-Caryophyllene / β-石竹烯

Purpose: Spicy, woody fragrance component and terpene

Notes: A sesquiterpene found in cloves, rosemary, and lavender.

🧪 Citronellol / 香茅醇

Purpose: Rose/citrus scent compound

Concerns: Regulated fragrance allergen that may cause contact dermatitis.

Notes: Monoterpenoid alcohol frequently found in geranium and citronella oils.

🧪 Terpinolene / 异松油烯

Purpose: Herbal, citrusy, and pine aroma component

Notes: Naturally found in tea tree, sage, and cardamom.

🧪 Turpentine / 松节油

Purpose: Fragrance solvent and natural terpene source

Concerns: Potential contact irritant and allergen in unrefined or concentrated forms.

Notes: Distillate obtained from pine resin, providing warm resinous notes.

🧪 Geraniol / 香叶醇

Purpose: Sweet rose-like fragrance component

Concerns: Listed cosmetic allergen known to cause contact reactions in sensitized persons.

Notes: Occurs naturally in palmarosa, rose, and citronella.

🧪 Coumarin / 香豆素

Purpose: Sweet, tonka bean/vanilla fragrance note

Concerns: Recognized fragrance allergen subject to strict regulatory usage caps.

Notes: Provides a warm, hay-like base note.

🧪 Limonene / 柠檬烯

Purpose: Fresh citrus fragrance component and solvent

Concerns: Declared allergen; oxidized limonene is a known contact sensitizer.

Notes: Major constituent of citrus peel essential oils.

📁 Colorants / 着色剂

🧪 Yellow 5 (CI 19140) / CI 19140 / 柠檬黄

Purpose: Synthetic yellow colorant

Concerns: Rare potential for mild contact allergic or hypersensitivity reactions.

Notes: A water-soluble azo dye also known as Tartrazine.

🧪 Blue 1 (CI 42090) / CI 42090 / 亮蓝

Purpose: Synthetic blue colorant

Notes: A synthetic triarylmethane dye combined here with Yellow 5 to create a green shade.