Dawn Original Dish Soap

Dawn's effectiveness at cutting grease is genuine — it uses sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES) as its primary surfactants, which are aggressive degreasers that work quickly on oily dishes and cookware. This is also why it has been used in wildlife rescue efforts after oil spills: its degreasing action is powerful enough to remove crude oil from bird feathers. For the dishwashing task itself, it performs well. The concerns are not about cleaning efficacy but about what comes along with it.

Dawn Original contains synthetic fragrance (listed as 'parfum' or 'fragrance'), which is an umbrella term for an undisclosed blend of potentially hundreds of chemicals. Fragrance compounds commonly include phthalates (used as fixatives), synthetic musks, and other volatile compounds that have been linked to hormone disruption and respiratory sensitization in some populations. P&G does not fully disclose the specific fragrance chemicals in Dawn, so consumers have no way to evaluate them individually. The blue dye (typically FD&C Blue No. 1) is added purely for cosmetic reasons and serves no cleaning function.

Some Dawn variants also contain formaldehyde-releasing preservatives — compounds that slowly release small amounts of formaldehyde over time as a biocide. Formaldehyde is a known skin sensitizer and has been classified as a human carcinogen by IARC at occupational exposure levels. At the concentrations used in dish soap it is a lower-priority concern for most users, but it adds to the overall chemical burden for those trying to minimize exposures.

Dawn does offer a 'Free and Clear' variant that removes synthetic fragrance and dyes. This is a meaningful improvement and makes it a reasonable option for households that want the degreasing power of SLS/SLES without the fragrance chemicals. For households prioritizing both cleaning performance and ingredient transparency, Seventh Generation fragrance-free or Branch Basics are better aligned choices.