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Is Seventh Generation Dish Soap Safe?

📅 Updated February 2026⏱️ 4 min readNEW

TL;DR

Seventh Generation is a significant improvement over conventional brands like Dawn, avoiding synthetic dyes and fragrances. However, it earns a C rating from the EWG because it relies on Methylisothiazolinone (MIT) and Benzisothiazolinone (BIT)—two synthetic preservatives known to trigger skin allergies and eczema. It's an "acceptable" budget pick, but not the safest option for sensitive skin.

🔑 Key Findings

1

Rated C (Moderate Concern) by the Environmental Working Group (EWG).

2

Contains Methylisothiazolinone (MIT), a preservative named 'Allergen of the Year' by the American Contact Dermatitis Society.

3

Uses Sodium Lauryl Sulfate (SLS), a plant-derived cleaner that is safe for most but can irritate dry skin.

4

Free of synthetic dyes, fragrances, and petroleum-based cleaners found in conventional brands.

The Short Answer

Seventh Generation Dish Soap is Acceptable, but proceed with Caution.

It is infinitely better than conventional blue soaps (like Dawn) because it strips out petroleum-based chemicals, synthetic dyes, and artificial fragrances. However, it stops short of being truly "clean." It relies on synthetic preservatives (MIT and BIT) that are well-documented skin irritants. If you have eczema, sensitive skin, or allergies, this soap may cause "dishpan hands" unless you wear gloves.

Why This Matters

Marketing claims like "Plant-Based" and "Free & Clear" often hide the full story. While Seventh Generation removes the most obvious toxins (like phthalates and formaldehyde-releasing agents), they swap in preservatives that help the product last longer on the shelf but can trigger contact dermatitis.

The Environmental Working Group (EWG) gives this product a C Rating. This middle-of-the-road score reflects a common issue in "green" cleaning: brands that are better for the environment (biodegradable) aren't always perfect for human health (skin irritation). Safest Dish Soap

What's Actually In Seventh Generation

Seventh Generation's formula is simple compared to conventional brands, but the end of the ingredient list is where the problems hide.

  • Sodium Lauryl Sulfate (SLS) — The primary cleaning agent. It cuts grease effectively and is plant-derived (coconut/palm). While safe from cancer risks (unlike SLES, which can be contaminated with Is 1 4 Dioxane In Dishwasher Detergent), SLS is a known skin stripper that can cause dryness. Is Sls In Dish Soap Bad
  • Methylisothiazolinone (MIT) — A synthetic preservative. It was named "Allergen of the Year" in 2013 due to skyrocketing rates of contact dermatitis. It is banned in leave-on cosmetics in Europe but allowed in rinse-off products like dish soap.
  • Benzisothiazolinone (BIT) — A cousin to MIT, this preservative is also a skin sensitizer and an environmental pollutant toxic to aquatic life.
  • Lauramine Oxide — A plant-based cleaning agent that boosts foaming. Generally considered safe but can be an irritant in high concentrations.

What to Look For

Green Flags:

  • No Synthetic Fragrance — The "Free & Clear" version is truly unscented, avoiding phthalate-laden "parfum."
  • Biodegradable — The formula breaks down safely in the environment (EPA Safer Choice Certified).
  • No Dyes — Clear liquid means no coal-tar dyes or unnecessary colorants.

Red Flags:

  • Isothiazolinones (MIT/BIT) — The biggest deal-breaker. If you see these long "zolinone" words, it's a risk for sensitive skin.
  • SLS — While not "toxic," it is harsh. If you have dry hands, this will make them drier.

The Best Options

If you can find them, there are cleaner alternatives that skip the harsh preservatives entirely.

BrandProductVerdictWhy
AttitudeSuperleaves Dish SoapEWG Verified, uses colloidal oatmeal, no MIT/BIT.
Branch BasicsConcentrateMulti-purpose, completely preservative-free (must mix with water).
Seventh GenerationFree & Clear⚠️Good budget pick, but contains allergens (MIT/BIT).
Mrs. Meyer'sDish Soap🚫Contains synthetic fragrance and harsh surfactants.
DawnUltra🚫Petroleum-based, synthetic dyes, and 1,4-dioxane risks.

The Bottom Line

1. Use it if you're on a budget. It is the best option available at standard grocery stores (Walmart/Target) compared to the toxic alternatives on the shelf next to it.

2. Wear gloves. Because of the SLS and synthetic preservatives, physical barriers are your best defense against irritation.

3. Upgrade if you can. For households with babies, eczema, or chemical sensitivities, switch to Attitude or Branch Basics to eliminate allergy risks entirely.

FAQ

Is Seventh Generation dish soap toxic?

No, it is not "toxic" in the sense of causing cancer or reproductive harm. However, it contains allergens (MIT/BIT) that can cause skin reactions. It is significantly safer than conventional brands but not the purest on the market.

Does Seventh Generation have 1,4-dioxane?

Likely not. They use SLS (Sodium Lauryl Sulfate), not SLES (Sodium Laureth Sulfate). SLES is the ingredient prone to 1,4-dioxane contamination. Seventh Generation also states they monitor for this contaminant. Is 1 4 Dioxane In Dishwasher Detergent

Is Seventh Generation better than Dawn?

Yes, absolutely. Dawn contains petroleum-derived surfactants, synthetic dyes (like Blue 1), and undefined "fragrance" mixtures. Seventh Generation uses plant-based cleaners and is fully biodegradable, making it safer for you and the planet. Dawn Vs Seventh Generation Dish Soap


References (16)
  1. 1. thefiltery.com
  2. 2. skinsafeproducts.com
  3. 3. seventhgeneration.com
  4. 4. betterhealthmarket.com
  5. 5. heb.com
  6. 6. ewg.org
  7. 7. coopmarket.com
  8. 8. vitacost.com
  9. 9. seventhgeneration.com
  10. 10. organicallybecca.com
  11. 11. gimmethegoodstuff.org
  12. 12. mamavation.com
  13. 13. youtube.com
  14. 14. safehouseholdcleaning.com
  15. 15. seventhgeneration.com
  16. 16. skinsafeproducts.com

🛒 Product Recommendations

Superleaves Dish Soap

Attitude

EWG Verified and free from MIT/BIT preservatives.

Recommended
👌
Dish Soap (Free & Clear)

Seventh Generation

Decent budget option, but wear gloves if you have eczema.

Acceptable
🚫
Ultra Dishwashing Liquid

Dawn

Contains petroleum-based surfactants, synthetic dyes, and fragrance.

Avoid

💡 We don't accept payment for recommendations. Some links may be affiliate links.

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