Thirdhand smoke can remain on indoor surfaces indefinitely, causing potentially harmful exposure to both smokers and non-smokers. Acute exposure of the human skin to thirdhand smoke elevates biomarkers associated with the initiation of skin diseases, such as contact dermatitis and psoriasis, according to a study published in the journal eBioMedicine. Sakamaki-Ching et al. demonstrated that acute dermal exposure to thirdhand smoke mimics the harmful...