Mrs. Meyer's dish soap uses plant-derived surfactants and natural colorants, but it contains synthetic fragrance — the single ingredient class that generates the most concern in cleaning products. Synthetic 'fragrance' or 'parfum' is a trade-secret umbrella that can include phthalates, synthetic musks, and allergenic compounds that are not individually disclosed. For people with fragrance sensitivities, asthma, or skin conditions, this undisclosed ingredient class is the main concern.
Fragrance-free dish soaps eliminate the fragrance package entirely. The cleaning performance is determined by the surfactant chemistry — the same compounds that do the degreasing work — which is equivalent or identical in most fragrance-free vs. fragranced versions of the same product line. Removing fragrance does not reduce cleaning power.
For households where dish soap residue comes into daily skin contact — through handwashing, rinsing dishes, or children helping in the kitchen — fragrance-free is the safer choice. Fragrance-free dish soap rates 'better'; Mrs. Meyer's rates 'caution' for its synthetic fragrance content. The rating gap is narrow and reflects the fragrance concern specifically. If you love the Mrs. Meyer's scent and have no sensitivities, it is not a high-risk product. But if fragrance exposure is something you are managing, the fragrance-free swap is straightforward and costs the same.