Allergic contact dermatitis to Tinosorb S, Scutellaria baicalensis, and other emerging allergens in cosmetics

Abstract

K E Y W O R D S : abietic acid, case report, contact dermatitis, dehydroabietic acid, hydrocolloid dressing, rosin Colophonium (rosin) is a natural resin derived from pine. It contains numerous chemical compounds, mostly abietic acid and its derivatives. 1,2 CASE REPORTA 13-year-old girl sustained a skin laceration on the left lower leg. She applied an over-the-counter (OTC) hydrocolloid dressing ("Dressing OMURA ET AL.

Allergic contact dermatitis to resveratrol and Scutellaria baicalensis root extract in a cosmetic product

“…It has also been studied in contact dermatitis models and showed beneficial effects 5 . Very few cases of allergic contact dermatitis to S. baicalensis have been published, mainly related to Anthelios sunscreen (La Roche Posay, L'Oreal) with reports of three affected patients 6–8 . Only one other case of allergic contact dermatitis to both resveratrol and S. baicalensis has been published in a 49‐year‐old woman using Resveratrol BE cream, like our patient 9 .…”

“…have been tested in healthy patients and showed no positive reaction, confirming the absence of irritation when tested at these concentrations. [3][4][5][6][7][8][9] This case highlights this importance of patch testing all the cosmetics in question brought by the patient, and in case of a positive reaction, to perform an additional patch test with the respective ingredients, in order to identify new emerging allergens.…”

Allergic contact dermatitis caused by dimethicodiethylbenzalmalonate (polysilicone‐15, Parsol SLX) and bis‐ethylhexyloxyphenol methoxyphenyl triazine (Tinosorb S) in sunscreen cream

“…The UV absorption spectrum of BEMT peaks at two wavelengths (310 and 340 nm), making it a UVA‐UVB filter agent 6 . There is only one reported case of BEMT‐induced allergic contact dermatitis 7 . Although the Japanese regulations permit up to 3% of BEMT in cosmetics, the European Commission regulations permit up to 10% of BEMT 8…”

“…6 There is only one reported case of BEMT-induced allergic contact dermatitis. 7 Although the Japanese regulations permit up to 3% of BEMT in cosmetics, the European Commission regulations permit up to 10% of BEMT. 8 Our patient reacted to both chemicals in the patch test without prior UV irradiation.…”

Endocrine Disrupting Chemicals in Cosmetics and Personal Care Products and Risk of Endometriosis

“…Within these minority families, bisphenols are the one that are usually found in the greatest presence in cosmetic products. The main use of BPA is the manufacture of epoxy resins, obtaining polycarbonate plastics, which have great mechanical and thermal stability, as well as very good transparency [25], while the main use of the families of camphenes, dimethicones, and oxycinnamates is that they are used as preservatives in the manufacture of PCPs [26,27]. Nevertheless, the concentrations of these substances in cosmetics and PCPs have been poorly addressed.…”