The aim of the study was to assess safety and efficacy of two formulations with SPF 50+ in patients with dermatoses such as acne vulgaris, rosacea and skin affected by aesthetic treatments.

Both tested formulas provide wide spectrum protection from sun radiation in UV, HEV and IR as well as alleviate symptoms of the respective dermatoses. Product 14004 contained hesperidin, an ingredient used in care of rosacea and dilated capillaries or hypersensitivity caused by aesthetic treatments (chemical peels, laser therapy). Product 14005 contained piroctone olamine, prebiotic and pore-diminishing lentil extract to support acne-prone, seborrheic and oily skin.

In vitro methods included antioxidant capacity (RPF) and wide spectrum radiation absorption assays. In vivo trials were based on dermatologist’s assessment, instrumental skin analysis and satisfaction survey. 

Product 14904 was proven to have high antioxidant activity (RPF=1,59*1018 DPPH/g) and absorbed 89,1%, 5% and 7% of UVA, HEV and IR radiation, respectively. It showed very good tolerance among patients with rosacea and was described as soothing and moisturizing by both supervising doctor and test subjects. Volunteers after aesthetic treatments reported good protective and barrier functions of the cosmetic. Testers with capillary issues reported reduction of erythema (79% responses), skin irritability (86%) and visibility of telangiectasia (64%).
 
Instrumental studies of product 14005 showed 19% reduction of sebum levels and 55% decrease in porphyrin levels. Volunteers reported the skin to be less shiny, with clearer and less visible pores, properly hydrated and nourished. 76% of participants observed decrease in visibility and severity of inflammatory lesions. Patients undergoing acne treatment exhibited high tolerance and reported improved skin hydration.

Presented results confirm the utility and efficacy of dual function products: high protection from sun damage and helping to alleviate symptoms of common skin problems.

Wide spectrum photoprotection in skin with acne, rosacea and after aesthetic treatments