Comparative behavior between sunscreens based on free or encapsulated UV filters in term of skin penetration, retention and photo-stability

Applications of ultrafast spectroscopy to sunscreen development, from first principles to complex mixtures

“…Indications of a photoproduct in ultrafast spectroscopy experiments can often be correlated with the long-term photostability of a molecule, which can be determined using steady-state techniques. For example, UV-visible, Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopies can be used to follow the progression of UV irradiation studies [76,167,168], which mimic molecular behaviours after long-term exposure to the sun. Steady-state spectroscopy techniques can therefore be considered a strategy to bridge the gap between ultrafast and ultraslow dynamics.…”

Photoprotective and Inhibitory Activity of Tyrosinase in Extract and Fractions of Terminalia catappa L.

“…However, SPF is a universal indicator that explains the effectiveness of a product or substance that is a UV protector. The higher the SPF value of a product or active sunscreen, the more effective it is to protect the skin from the destructive effects [20], [21]. UV B light induces sunburn (burning skin), at high and long exposure induces skin cancer formation.…”

Poly traditional Chinese medicine formulation prepared with skin moisturizing properties

“…The various conditions for testing the stability of a stock solution included room temperature (placed on the laboratory table top), protected from light (placed in a 28 ± 1°C incubator cassette), illumination (in a 28 ± 1°C constant temperature incubator placed under light), heat (placed in an oven at 45 ± 1°C), alternating hot and cold (ie, a 28 ± 1°C and 4 ± 1°C alternating hot and cold incubator), refrigeration (placed in a 4 ± 1°C refrigerator fresh‐keeping layer), and freezing (placed in a − 20 ± 1°C freezer layer) . 14 …”