Biolage Color Last Shampoo

A silicone- and sulfate-based cleansing shampoo formulated to deeply clean the scalp while leaving hair smooth, shiny, and frizz-free through conditioning silicones and nourishing soybean oil.

Performance Rating: 8.0

This formulation earns a strong 8.0/10 for performance due to its highly effective cleansing and conditioning properties. The combination of Sodium laureth sulfate and Coco-betaine creates a rich, satisfying lather that thoroughly cleanses the hair and scalp. Dimethicone, a classic silicone, provides exceptional hair smoothing, detangling, and frizz control, while Guar hydroxypropyltrimonium chloride offers excellent anti-static conditioning. Additionally, Glycine soja oil helps nourish the hair strands. However, the inclusion of heavy silicones like Dimethicone may weigh down fine or thin hair over time, preventing a higher score.

Safety Rating: 6.0

The safety rating of 6.0/10 reflects several potential concerns for sensitive skin. While Sodium laureth sulfate is an effective cleanser, it can be stripping and irritating to sensitive scalps. The formula contains a substantial number of fragrance allergens, including Limonene, Hexyl cinnamal, Coumarin, Benzyl alcohol, Linalool, and Amyl cinnamal, which significantly increase the risk of contact dermatitis and allergic reactions. The inclusion of Salicylic acid and Cocamide MIPA also adds to the potential for mild skin irritation, making it less suitable for highly sensitive individuals.

Final Rating: 7.0

With a balanced final rating of 7.0/10, this shampoo represents a typical high-performance commercial product. It excels at its primary functions—cleansing, smoothing, and softening the hair—thanks to robust surfactants and conditioning silicones. However, these performance benefits come at the cost of a lower safety profile, primarily driven by sulfates and a long list of fragrance allergens. It is an excellent choice for individuals seeking sleek, manageable hair, but those with sensitive scalps or allergen sensitivities may want to proceed with caution.

Verdict

This shampoo is a classic commercial formulation that balances deep cleansing action with intense smoothing benefits. At its core, the formula relies on sodium laureth sulfate (SLES), a powerful cleansing agent that effectively removes oil, dirt, and product buildup. To prevent the stripping feeling often associated with sulfates, it is blended with coco-betaine, a milder co-surfactant that softens the formula and boosts its rich lather. What makes this shampoo particularly effective for unruly hair is the inclusion of dimethicone, a heavy-duty silicone, alongside glycine soja (soybean) oil. Together, these ingredients coat the hair shaft to lock in moisture, block out humidity, and significantly reduce frizz. This makes it an excellent choice for individuals with thick, coarse, or naturally frizzy hair who want a sleek, manageable finish. Additionally, salicylic acid is included in the mix to gently exfoliate the scalp, helping to break down excess sebum and keep the hair roots feeling light and refreshed. However, this formula is not without its drawbacks. The combination of sulfates and silicones makes it highly polarizing. While the SLES is strong enough to wash away the dimethicone and prevent heavy buildup, the frequent use of sulfates can be overly drying for those with naturally dry, brittle, or chemically damaged strands. Furthermore, the presence of dimethicone means it is unsuitable for individuals following silicone-free hair care regimens, such as the Curly Girl Method, as it can weigh down fine hair or loose curls over time. Another consideration is the inclusion of multiple potential sensitizers. The formula contains a high concentration of fragrance allergens like limonene, hexyl cinnamal, coumarin, and linalool. If you have a sensitive scalp, eczema, or contact allergies, these ingredients may trigger itching or redness. In summary, this is a highly functional, smoothing shampoo best suited for those with normal to oily scalps and frizzy, thick hair who desire high-performance cleansing and a sleek, polished look. Those with dry, curly, or highly sensitive scalps should look for milder, sulfate-free alternatives.

Who Is This Product For?

Individuals with normal to oily scalps who need an effective, deep-cleansing shampoo.
People with frizzy, thick, or coarse hair looking to achieve a smooth, sleek, and manageable finish.
Those who frequently use styling products and need to wash away heavy buildup.

Who Should Avoid This Product?

People with extremely dry, damaged, or brittle hair that can be further dehydrated by sulfates.
Individuals with sensitive scalps, eczema, or fragrance allergies due to the presence of multiple fragrance allergens.
Those following the Curly Girl Method or looking for silicone-free and sulfate-free hair care.

Ingredient Evaluation

📁 Cleansing Agents & Surfactants / 清洁与表面活性剂

🧪 Sodium laureth sulfate / 月桂醇聚醚硫酸酯钠

Purpose: Primary cleansing and foaming agent.

Concerns: Can be drying or irritating to sensitive scalps.

Notes: A very common surfactant that creates a rich lather but can strip natural oils.

🧪 Coco-betaine / 椰油甜菜碱

Purpose: Mild surfactant and foam booster.

Concerns: Generally safe with low risk of irritation.

Notes: Often paired with harsher surfactants to reduce irritation and improve mildness.

🧪 Cocamide MIPA / 椰油酰胺 MIPA

Purpose: Thickener and foam booster.

Concerns: Low hazard, though may cause mild irritation in sensitive individuals.

Notes: Helps build a stable, creamy lather.

📁 Conditioning & Moisturizing Agents / 调理与保湿成分

🧪 Dimethicone / 聚硅氧烷 (二甲基硅油)

Purpose: Silicone conditioner.

Concerns: Can build up on hair over time, requiring a clarifying wash.

Notes: Smoothes the hair cuticle, reduces frizz, and adds shine.

🧪 Glycine soja oil / soybean oil / 野大豆油

Purpose: Natural emollient and hair conditioner.

Concerns: Very low risk.

Notes: Nourishes the hair with essential fatty acids.

🧪 Guar hydroxypropyltrimonium chloride / 瓜儿胶羟丙基三甲基氯化铵

Purpose: Antistatic and conditioning agent.

Concerns: Very low risk.

Notes: Helps detangle hair and improves manageability without weighing it down.

📁 Solvents, Viscosity & Texture Controllers / 溶剂与质地调节剂

🧪 Aqua / water / eau / 水

Purpose: Solvent and base.

Concerns: None.

Notes: The primary carrier ingredient for dissolving other components.

🧪 Sodium chloride / 氯化钠

Purpose: Thickening agent.

Concerns: Can contribute to dryness in high concentrations.

Notes: Commonly known as salt, used to thicken surfactant-based formulas.

🧪 Glycol distearate / 乙二醇双硬脂酸酯

Purpose: Pearlescent agent and opacifier.

Concerns: Minimal concerns.

Notes: Provides the formulation with a shiny, pearly appearance.

🧪 Hexylene glycol / 己二醇

Purpose: Solvent and viscosity agent.

Concerns: May cause mild eye or skin irritation.

Notes: Helps blend oil and water-soluble components.

🧪 Carbomer / 卡波姆

Purpose: Thickening agent and stabilizer.

Concerns: Very low risk.

Notes: Helps control the viscosity and texture of the shampoo.

📁 pH Adjusters / pH 调节剂

🧪 Citric acid / 柠檬酸

Purpose: pH adjuster.

Concerns: Can cause mild eye irritation in high amounts.

Notes: Balances the pH of the shampoo to better match the natural pH of hair and scalp.

🧪 Sodium hydroxide / 氢氧化钠

Purpose: pH adjuster.

Concerns: Corrosive in raw form, but completely safe when neutralized in formulation.

Notes: Used in tiny amounts to adjust acidity to a skin-neutral level.

🧪 Fumaric acid / 富马酸

Purpose: pH adjuster.

Concerns: Very low risk.

Notes: Used in very small amounts to stabilize product pH.

📁 Preservatives & Actives / 防腐剂与活性成分

🧪 Sodium benzoate / 苯甲酸钠

Purpose: Preservative.

Concerns: Low risk, safe at cosmetic levels.

Notes: Prevents fungal and bacterial contamination in the formula.

🧪 Salicylic acid / 水杨酸

Purpose: Exfoliant, anti-dandruff agent, and preservative.

Concerns: Can cause irritation or dryness if you have sensitive skin.

Notes: Helps remove dead skin cells and excess sebum from the scalp.

🧪 Benzyl alcohol / 苯甲醇

Purpose: Preservative and solvent.

Concerns: Can be an allergen for highly sensitive individuals.

Notes: Helps prevent microbial growth and acts as a mild solvent.

📁 Fragrances & Allergens / 香精与致敏原

🧪 Parfum / fragrance / 香精

Purpose: Fragrance.

Concerns: Can cause irritation or allergic reactions in sensitive individuals.

Notes: A generic term for a blend of scent chemicals.

🧪 Limonene / 柠檬烯