Marigold, commonly referring to Calendula officinalis, has a long history of traditional use in herbal medicine for various skin conditions, including eczema. Folk medicine traditions in Europe, India, and parts of the Middle East have employed calendula preparations—such as ointments, creams, or teas—for their purported anti-inflammatory and skin-soothing properties. The rationale for its use in eczema stems from observations that calendula extracts may help reduce irritation, redness, and promote healing in minor wounds and dermatitis.

Scientifically, the evidence supporting calendula (marigold) for eczema is limited and of low quality. A few small clinical studies and laboratory investigations suggest that calendula displays anti-inflammatory and wound-healing properties, likely due to the presence of flavonoids, triterpenoids, and other phytochemicals. However, high-quality randomized controlled trials specifically evaluating calendula's effectiveness in treating eczema are lacking. Most modern clinical recommendations for eczema do not include marigold as a primary or supported therapy, and any benefit is considered anecdotal or based on traditional use rather than robust evidence.

In summary, the use of marigold for eczema is primarily justified by traditional practices rather than strong scientific validation. Individuals considering its use should consult with a healthcare provider, particularly as some people may experience allergic reactions to calendula-based products.