SUN PROTECTION
Sustainable protection against UV damage
Charlotte Vignal, Lucie Brun, Pascale Goyat, George Rosson - Natura-Tec
Skin is routinely exposed to various environmental stress elements such as UV rays in everyday life. In order to be in accordance with the concerns of consumers regarding the safety and naturality of cosmetic ingredients, there is a growing demand for active ingredients able to protect from sun damage. This could be by protecting the skin from the inside, by stimulating the skin anti-oxidant system, for example. Or even by boosting the SPF of sunscreens to reduce the level of physical and chemical UV filters, improving the naturality, safety, sensoriality and stability. Natura-Tec has developed an active that
is able to increase the SPF of sunscreens by boosting the natural capacity of skin to produce its own physiological antioxidants through biomimetic pathways. This protected skin from oxidative damage induced by external aggressions of UVA and UVB radiations for an inside-out protection against UV rays. Empowered with this natural, sustainable,
and biocompatible active emollient, Natura- Tec developed two waterless sunscreen formulations with a unique sensoriality: 'Sun Protect & Repair Solid Cream in Stick’ and an ‘Invisible Upcycled Sun Oil’. These formulations are based on natural and sustainable ingredients and deliver a unique sensation of lightness and smoothness leaving a delicate veil on the skin insuring sun protection, nutrition and wellness.
Solar radiation Solar radiation is a radiant (electromagnetic) energy from the sun. It provides light and heat for the Earth and energy for photosynthesis. This radiant energy is necessary for the
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metabolism of the environment and its inhabitants. Solar radiation is composed of a continuous electromagnetic spectrum of radiation, divided
according to its wavelength (λ): ■ Ultraviolet radiation (UV) (100-400 nm) ■ Visible (400-780 nm) ■ Infrared (>780 nm) Ultraviolet radiation (UV), in turn, is divided into:
■ UVC (100–290 nm) ■ UVB (290–320 nm) ■ UVA (320–400 nm) Regarding ultraviolet radiation, the UVB
band is considered less energetic, reaching only the epidermis. However, it presents several potentially harmful effects. Different mechanisms are involved in the action of UVB radiation, such as inflammation, uncontrolled cell production, formation of apoptosis and anarchic cell division and its neoplastic effects, causing direct damage to the cellular genetic material and increasing the carcinogenic potential.1 Diversely, UVA radiation reaches the skin
tissue more deeply, being responsible for physiological and pathological damage, either early or late, promoting photoageing for damage caused to collagen and elastin fibres, formation of ROS and wrinkles, in addition to potentiating neoplastic damages of UVB radiation.2
The Spectrum of Light Figure 1: The spectrum of light
www.personalcaremagazine.com
Skin protection against oxidative sun damage Skin is a highly metabolic tissue which possesses the largest surface area in the body
March 2024 PERSONAL CARE
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