Can curtains and drapes contain formaldehyde?

Yes, curtains and drapes frequently contain formaldehyde-based resins used to create wrinkle resistance, maintain pleats, and improve drape. Blackout curtains are particularly likely to contain formaldehyde because the backing material and light-blocking coatings often use formaldehyde-based adhesives. The sun warming your curtains during the day can accelerate off-gassing into your living space.

Formaldehyde from curtains contributes to indoor air pollution and can cause eye irritation, headaches, and respiratory issues at elevated levels. People with chemical sensitivities or asthma may be especially affected. Nurseries with new curtains can have particularly high formaldehyde concentrations, which is concerning given infants' vulnerability.

Choose curtains made from untreated natural fibers like linen, organic cotton, or hemp. If you need blackout function, look for curtains with natural rubber or untreated fabric backings rather than synthetic coatings. Washing new curtains several times before hanging can reduce but not eliminate formaldehyde from bonded resins.