Charlie's Soap Laundry Powder is notable for an unusually short ingredient list: sodium carbonate, sodium bicarbonate, and a coconut-derived surfactant. No fragrance, no optical brighteners, no synthetic enzymes, no preservatives, no dyes. This level of ingredient minimalism is rare in commercial laundry detergents, and it is precisely why Charlie's rates 'best' — there is simply very little to evaluate for chemical concerns.
Standard fragrance-free liquid detergents are a meaningful step up from fragranced conventional detergents but typically contain more ingredients than Charlie's: optical brighteners, preservatives to prevent microbial growth in the liquid formula, enzyme complexes, and stabilizers. These ingredients are generally considered safe, but they add complexity that Charlie's eliminates.
For households with highly sensitive skin, chemical sensitivities, or a preference for maximum ingredient transparency, Charlie's Soap is the most defensible laundry option available. The trade-off is that its minimal formula is less effective on heavily soiled items or specialized stains — it lacks the enzyme activity of more complex detergents. For lightly to moderately soiled everyday laundry, it cleans well and is genuinely the cleanest formulation available. Fragrance-free liquid detergent is more versatile; Charlie's is the more minimal and transparent choice.