Patch tests are highly recommended in eczema patients with eyelid involvement. Sunscreen constitutes a potential cause of eyelid or facial allergic contact dermatitis, and should be considered in patients with refractory eczema on these locations. We report a patient sensitized to several emerging allergens such as bis-ethylhexyloxyphenol methoxyphenyl triazine (Tinosorb S), Scutellaria baicalensis extract, and propylene glycol with an eyelid dermatitis. Patch tests to the combined ingredients propylene carbonate, cyclopentasiloxane, and disteardimonium hectorite; and talc, Cl 77 491, and dimethicone/methicone copolymer were also positive. We highlight the importance of systematically patch testing with the cosmetics brought in by our patients, as well as with the individual ingredients whenever positive. The identification of emerging allergies to new compounds in cosmetics mainly depends on this practice.
Keywords: Scutellaria baicalensis extract; CAS no. 187393-00-6; CAS no. 94279-99-9; Tinosorb S; allergic contact dermatitis; bis-ethylhexyloxyphenol methoxyphenyl triazine; case report; organoclay; propylene carbonate, cyclopentasiloxane, and disteardimonium hectorite; propylene glycol; talc, Cl 77491, and dimethicone/methicone copolymer.
© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.