INFLUENCE OF CLEANSING PRODUCT TYPE ON SEVERAL SKIN
PARAMETERS AFTER SINGLE USE.
MIRELA MOLDOVAN1*, ALINA NANU2
1University of Medicine and Pharmacy Iuliu Hatieganu, Department of
Dermopharmacy and Cosmetics, 41, V.Babes Street, 400012, Cluj-
Napoca, Romania
2Evic, Romania
*corresponding author: mmoldovan@umfcluj.ro
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Abstract:
With the increasing use of skin cleansing products, the awareness of productsinduced skin irritation, itching, dry skin and other potential effects has also increased. In this paper we studied the influence of some skin cleansers on skin properties that may be influenced by their use: skin surface pH, stratum corneum water content and transepidermal water loss (TEWL). Six commercially available skin cleansers were used in this study: a soap bar, a superfatted soap bar, a transparent soap bar, a combar, a superfatted solid syndet and a liquid syndet. Each product was tested on 20 healthy volunteers, without clinical signs of dermatological or allergic diseases. Tap water was used for hand washing, and the washing time was in all cases 1 minute. Skin measurements, skin pH, skin surface hydration or hydration of stratum corneum and transepidermal water loss were performed before skin washing at several time intervals after washing.
All studied parameters were influenced by the products, but in different ways and with different intensities. The parameter which was most influenced by the test products was the pH value. All products had a drying effect on stratum corneum, depending on the product composition. Transepidermal water loss (TEWL) measurements shower very small differences between measurements performed before hand washing and those performed after washing.
The changes of skin parameters after the single use of cleansing products are reversible and in the case of a healthy skin they return to normal values in about 90 minutes after washing.
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