Amazon Basics Concentrated Liquid Laundry Detergent, Free of Perfumes & Clear of Dyes

A high-performance liquid laundry detergent featuring a powerful dual-enzyme system and biodegradable water softeners, though its use of strong preservatives and fragrances makes it unsuitable for sensitive skin.

Performance Rating: 8.2

The high performance rating of 8.2/10 is justified by a robust cleaning formulation. The primary surfactant, C12-15 Alcohols Ethoxylated, is a powerful non-ionic cleaning agent that excels at emulsifying grease, oil, and heavy dirt. This is bolstered by an active dual-enzyme system featuring Protease Enzyme to digest protein-based stains (like blood, grass, and baby food) and Amylase Enzyme to target stubborn starch-based soils. The inclusion of Tetrasodium Iminodisuccinate, a biodegradable chelating agent, softens the wash water by binding hard-water minerals, thereby maximizing the surfactant’s efficacy. Furthermore, 2-Propenoic Acid, Telomer and Modified Styrene/Acrylic Polymer serve as highly effective dispersants and anti-redeposition agents, ensuring that lifted dirt remains suspended in the wash water and does not settle back onto the laundry.

Safety Rating: 4.7

The low safety rating of 4.7/10 is primarily driven by the inclusion of harsh synthetic preservatives and potential allergens. Specifically, Methylisothiazolinone (MIT) and Benzisothiazolinone (BIT) are notorious contact allergens and skin sensitizers, widely known to trigger contact dermatitis and skin irritation in sensitive individuals. The addition of synthetic Fragrances further escalates the risk of skin sensitization and respiratory irritation. Additionally, Sodium Hydroxide, used as a pH adjuster, is highly alkaline and corrosive in its raw form, while C12-15 Alcohols Ethoxylated can be irritating to the eyes and skin upon direct contact.

Final Rating: 6.4

The final rating of 6.4/10 represents a balance between excellent laundry-cleansing performance and notable safety concerns. While the detergent delivers a thorough clean thanks to its powerful non-ionic surfactants, stain-busting enzymes, and anti-redeposition polymers, its safety profile is significantly compromised. The presence of sensitizing preservatives like MIT and BIT, along with added fragrances, makes it a potentially hazardous choice for users with sensitive skin, allergies, or eczema. Therefore, while it is highly effective at cleaning, it is less than ideal from a chemical-safety standpoint.

Verdict

This liquid laundry detergent is a highly effective, modern cleaning formula engineered to tackle tough stains while utilizing several eco-conscious ingredients. At its core, the detergent relies on C12-15 Alcohols Ethoxylated, an exceptional nonionic surfactant that excels at cutting through grease, oil, and daily grime. To elevate its cleaning performance, the formula features a targeted dual-enzyme system consisting of Protease Enzyme and Amylase Enzyme. These enzymes act as biological catalysts, actively dissolving stubborn protein-based stains (such as grass, blood, and dairy) and starch-based residues (such as baby food, sauces, and gravies) that standard detergents often leave behind.guarantee consistent cleaning power regardless of your home’s plumbing, the detergent incorporates Tetrasodium Iminodisuccinate. This ingredient serves as a green, highly biodegradable chelating agent that softens hard water by binding calcium and magnesium minerals, thereby preventing them from interfering with the surfactant’s cleaning cycle. Furthermore, the inclusion of 2-Propenoic Acid, Telomer acts as a dispersing polymer, ensuring that once soil is lifted from the fabrics, it remains suspended in the wash water and is completely rinsed away rather than redepositing back onto your clean garments.and fabric-brightening benefits are also integrated into the formulation. The compound 1,4-Diphenylbutadiyne functions as a fluorochrome (optical brightener), absorbing invisible ultraviolet light and emitting a subtle blue tint that makes whites look remarkably brighter and cleaner. Meanwhile, the Modified Styrene/Acrylic Polymer serves as an opacifying agent, giving the liquid a luxurious, creamy appearance, while Ethanol and Sodium Hydroxide work in tandem to stabilize the enzymes and balance the pH for shelf longevity.its outstanding stain-removing capabilities, the formula has a significant downside regarding skin safety. It utilizes Methylisothiazolinone (MIT) and Benzisothiazolinone (BIT) as its primary preservatives. While highly efficient at keeping the water-based detergent free of mold and bacteria, both MIT and BIT are notorious contact allergens and skin sensitizers. When these preservatives are paired with synthetic Fragrances, the detergent becomes a major trigger for contact dermatitis, eczema flare-ups, and skin irritation. Consequently, while it is a stellar stain-releasing powerhouse, it requires caution for sensitive skin.

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Ingredient Evaluation

📁 Solvents and Carriers / 溶剂与载体

🧪 Water / 水

Purpose: Acts as a solvent and carrier for all other ingredients.

Concerns: No health concerns, though it must be purified to prevent microbial growth.

Notes: Forms the liquid base of the detergent formulation.

🧪 Ethanol / 乙醇

Purpose: Functions as a solvent and a formulation stabilizer, regulating viscosity.

Concerns: Minimal health concerns in diluted laundry products, but can cause mild dryness or irritation in high concentrations.

Notes: Helps keep the organic components in a stable liquid phase.

📁 Surfactants / 表面活性剂

🧪 C12-15 Alcohols Ethoxylated / C12-15 醇聚氧乙烯醚

Purpose: Non-ionic surfactant that lifts grease, dirt, and stains from fabrics.

Concerns: Can cause skin and eye irritation; toxic to aquatic life if discharged untreated.

Notes: Widely valued for its high biodegradability and excellent soil-removal properties.

📁 Builders and pH Adjusters / 助剂与pH调节剂

🧪 Tetrasodium Iminodisuccinate / 亚氨基二琥珀酸四钠

Purpose: Biodegradable chelating agent and water softener.

Concerns: Very low toxicity; considered highly safe for skin contact.

Notes: A green, eco-friendly alternative to traditional chelating agents like EDTA and NTA.

🧪 Sodium Hydroxide / 氢氧化钠

Purpose: Functions as a pH adjuster to stabilize and optimize detergent alkalinity.

Concerns: Extremely corrosive in concentrated raw form, but neutralized and completely safe in the finished formulation.

Notes: Keeps the cleaning solution at an optimal alkaline pH for soil removal.

📁 Enzymes / 酶制剂

🧪 Protease Enzyme / 蛋白酶

Purpose: Selectively breaks down protein-based stains (blood, grass, egg, gravy).

Concerns: May cause respiratory irritation if inhaled in raw powder form, though safe when stabilized in liquid.

Notes: Highly effective even at lower washing temperatures.

🧪 Amylase Enzyme / 淀粉酶

Purpose: Breaks down starch-based stains (pasta, chocolate, baby food).

Concerns: Potential allergen if inhaled in dry forms; completely safe in a liquid carrier.

Notes: Works synergistically with surfactants and other enzymes to improve cleaning.

📁 Performance and Aesthetic Polymers / 性能与外观调理聚合物

🧪 2-Propenoic Acid, Telomer / 2-丙烯酸端基调聚物

Purpose: Serves as an anti-redeposition polymer, keeping suspended dirt from settling back onto fabrics.

Concerns: Low toxicity; generally considered environmentally acceptable.

Notes: Enhances detergent efficiency by maintaining clean water-soil suspension.

🧪 1,4-Diphenylbutadiyne / 1,4-二苯基丁二炔

Purpose: Functions as an optical brightener or dye/fluorochrome to make fabrics look whiter and brighter.

Concerns: May cause mild skin or eye irritation upon direct contact.

Notes: Absorbs ultraviolet light and re-emits it in the blue spectrum to mask fabric yellowing.

🧪 Modified Styrene/Acrylic Polymer / 改性苯乙烯/丙烯酸共聚物

Purpose: Acts as an opacifier or dispersant to provide a creamy, opaque product appearance.

Concerns: Synthetic polymer; potential environmental accumulation if not designed to break down.

Notes: Improves formulation aesthetic stability and consistency.

📁 Preservatives / 防腐剂

🧪 Methylisothiazolinone / 甲基异噻唑啉酮

Purpose: Preservative that inhibits bacteria, mold, and yeast growth to extend shelf life.

Concerns: Known contact allergen and skin sensitizer that can trigger eczema or contact dermatitis.

Notes: Highly regulated and restricted to very low concentrations in consumer products.

🧪 Benzisothiazolinone / 苯并异噻唑啉酮

Purpose: Broad-spectrum preservative preventing microbial degradation of the product.

Concerns: Can cause skin sensitization and allergic contact dermatitis in sensitive individuals.

Notes: Commonly combined with other preservatives to maintain product hygiene over time.

📁 Fragrances / 香精

🧪 Fragrances / 香精

Purpose: Imparts a pleasant scent to fabrics and masks the natural odor of surfactant ingredients.

Concerns: Can trigger respiratory allergies, asthma, or skin irritation in sensitive people.

Notes: Usually consists of a complex proprietary blend of essential oils and aroma chemicals.