Parsol SLX

Absorption

Polysilicone-15 is reported as having little to no absorption through the skin . At this time, however, studies demonstrate that the components of most commonly used sunscreens are likely absorbed into the skin at least to some extent - although penetration to deeper tissues and the cutaneous circulation remains limited . Despite the extensive use of sunscreen products around the world, there have been few reports of adverse effects related to their use .

Toxicity

From what studies are available, the overall belief at the moment is that polysilicone-15 largely remains on the surface of the skin when applied and that skin penetration tests demonstrated maximum retention on the skin . The systemic presence of the compound is consequently expected to be minimal.

Description

Parsol SLX (INCI: Polysilicone-15) is a silicone-based UV-B absorber. This colorless-to-pale yellow viscous liquid integrates easily with the oil phase of sunscreen formulation. PARSOL SLX is the first polymeric UV-B filter consisting of chromophores attached to a silicone backbone and is an effective photostabilizer for PARSOL 1789. When combined with PARSOL HS, this product can achieve a very high SPF (>30), enabling day care or sunscreen formulations that leave a dry, silky touch on the skin.

The Uses of Parsol SLX

Parsol SLX is a silicone based UV-B absorber. It added to rinse-off and leave-on hair products delivers multiple benefits including prevention of colour fading, gloss enhancement and conditioning. As a stabilizing ingredient that is used in sunscreens, its job is to slow down the rate of degradation of the sun-absorbing chemicals.

Background

Polysilicone-15 is a silicone based UVB absorber . The compound is a colorless to pale yellow viscous liquid which is soluble in organic solvents of medium polarity and insoluble in water . It is the first polymeric UVB filer consisting of chromophores attached to a silicone backbone . When included in various other cosmetic shampoos, conditioners, or hairsprays the compound also functions as an effective photostabilizer of the product .

Indications

Polysilicone-15 is used as an UV-filter in cosmetic sunscreen products as well as in other cosmetic products (like shampoos, conditioners, hairsprays, etc.) where it can confer photostability to the product(s) .

Pharmacokinetics

As an active ingredient in sunscreen products, polysilicone-15 is applied directly onto human skin where it acts as a chemical sunscreen layer between skin and sunlight that also directly absorbs the UV sunlight radiation . When used in combination with other ingredients in cosmetic shampoos, conditioners, hairsprays, etc. the photostable polysilicone-15 confers photostability onto the entire combined product, protecting it from deterioration in the sunlight by absorbing the UV light radiation . Additionally, there have been studies suggesting polysilicone-15 is also considered to have little to no absorption through the skin , so little systemic exposure and pharmacokinetics are expected and users can freely wash off and re-apply the compound as necessary.

Metabolism

Polysilicone-15 is reported as having little to no absorption through the skin . The systemic presence of the compound is consequently expected to be minimal.