02.02.24
US Patent No. 11,883,516 B2 (Mohini Anand Bapat, Praful Gulab Rao Lahorkar, Rajkumar Perumal, Nikita Tomar, Ashish Anant Vaidya); Conopco, Inc. (d/b/a Unilever) has been awarded a US patent for a personal cleansing composition for enhanced deposition of sunscreens on the body.
The composition more particularly provides for wash off compositions that ensure that the sunscreens incorporated therein are stable and due to the high deposition on to surface provide high sun protection factor (SPF). This is achieved through combination of two select water-soluble sunscreens in a high surfactant containing composition, according to the patent.
The composition contains a water soluble UVA sunscreen; a water soluble UVB sunscreen; surfactant; and a cosmetically acceptable carrier.
The water soluble UVA sunscreen is selected from di sodium phenyl dibenzimidazole tetra sulfonate, terephthalylidene dicamphor sulfonic acid and mixtures thereof.
The water soluble UVB sunscreen is selected from phenyl benzimidazole sulphonic acid, benzylidene camphor sulfonic acid, benzophenone-4 and mixtures thereof.
The solubility in water of the UVA sunscreen and UVB sunscreen is higher than 10 g/L at 25°C.
The composition more particularly provides for wash off compositions that ensure that the sunscreens incorporated therein are stable and due to the high deposition on to surface provide high sun protection factor (SPF). This is achieved through combination of two select water-soluble sunscreens in a high surfactant containing composition, according to the patent.
The composition contains a water soluble UVA sunscreen; a water soluble UVB sunscreen; surfactant; and a cosmetically acceptable carrier.
The water soluble UVA sunscreen is selected from di sodium phenyl dibenzimidazole tetra sulfonate, terephthalylidene dicamphor sulfonic acid and mixtures thereof.
The water soluble UVB sunscreen is selected from phenyl benzimidazole sulphonic acid, benzylidene camphor sulfonic acid, benzophenone-4 and mixtures thereof.
The solubility in water of the UVA sunscreen and UVB sunscreen is higher than 10 g/L at 25°C.