In vivo efficacy and properties of semisolid formulations containing panthenol

• DOI: 10.1111/jocd.12527
• Publication Date: 2018-03-26T04:20:11Z
• Authors: Jana Pavlačková; Pavlína Egner; Tomáš Sedláček; Pavel Mokrejš; Jana Sedlaříková; Jana Polášková
• Keywords: Adult; Drug Compounding; Sensation; formulation; Cosmetics; Pantothenic Acid; sensory analysis; panthenol; semisolid; Young Adult; 03 medical and health sciences; 0302 clinical medicine; Skin Physiological Phenomena; Humans; skin hydration; Water; Middle Aged; Water Loss, Insensible; 3. Good health; TEWL; rheology; Emulsions; Female; Dermatologic Agents; Epidermis; Rheology; Hydrophobic and Hydrophilic Interactions

SummaryBackgroundPanthenol is an active substance used in dermatology to protect the health of the skin, to treat defects in the morphology of the stratum corneum. In cosmetology, hydrating, softening, and barrier function of panthenol are utilized. Detailed studies evaluating the efficacy of panthenol in cosmetic and pharmaceutical semisolid formulations and establishing its optimum concentration are needed.ObjectivesTo investigate whether an addition of 5‐13 wt% panthenol in o/w and w/o emulsions increases hydration and supports the barrier properties of the skin. Rheological properties and sensory analysis of prepared formulations are supplemented.MethodsNoninvasive instrumental methods in vivo were used. The hydration and barrier effect of semisolid formulations on the skin were observed for 48 hour; testing was conducted on 40 women. The effect was compared with formulations without any content of panthenol. The rheological and organoleptic properties of the formulations were evaluated.ResultsAfter applying either form of the formulations containing 7‐11 wt% of panthenol hydration of the skin increased, transepidermal water loss decreased. pH of the skin shifted toward neutral after application of tested formulations. The rheological properties of the formulations were influenced by the type of vehicle, the amount of panthenol, and temperature. Sensory evaluation of both semisolid forms revealed statistically significant differences in o/w formulations with regard to spreadability.ConclusionsThe presence of panthenol in an o/w and w/o semisolid formulations significantly enhances skin barrier repair and hydration of the stratum corneum. Better vehicle for the active substance as regards hydration proved o/w formulations.