Compositions for providing improved sunscreen protection

A technology of composition and sunscreen, which is applied in preparations for toiletry, preparations for skin care, medical preparations containing active ingredients, etc., and can solve problems such as skin irritation and incompatibility of sunscreens

Inactive Publication Date: 2017-08-29
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, organic sunscreens may cause skin irritation in some cases
Another issue is that some sunscreens may not be fully compatible with other sunscreens or formulation components
[0007] While known encapsulates have shown some advantages, formulations prepared from them require extensive application to ensure adequate protection

Method used

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  • Compositions for providing improved sunscreen protection
  • Compositions for providing improved sunscreen protection
  • Compositions for providing improved sunscreen protection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0122] The formulations in Table 1 were prepared by combining the indicated sunscreen and sugar ingredients with the base formulations of Table 2 or Table 3, and the SPF and UVAPF properties were determined using the methods described below.

[0123] Examples 1-12 used the base formulation of Table 2, and Examples 13-16 used the base formulation of Table 3. The formulations in Table 1 were evaluated for in vitro sun protection efficacy using a commercially available Optometrics 290S SPF form (Optometrics Inc., Littleton, MA). In PMMA board (7cm 2 ) at 2mg / cm 2 Doses of each formulation were applied separately and allowed to air dry for approximately 20 minutes. An average of six (6) readings per plate was obtained.

[0124] Table 1

[0125]

[0126]

[0127] (1) Stearyl dihydroxypropyl diammonium oligosaccharide

[0128] (2) Galactomannan

[0129] (3) D-glucose polysaccharide

[0130] (4) Xyloglucan

[0131] (5) Maltotriose

[0132] Avobenzone (Parsol 1789, Buty...

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PUM

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Abstract

Topical compositions with improved sun protection factor and UVA protection factor are described. The compositions have sunscreen and polymer of D-glucose and / or nonionic, branched heteroglycan and specific diol compounds to enhance skin protection benefits.

Description

technical field [0001] The present invention relates to compositions for providing improved sun protection. More specifically, the present invention relates to compositions comprising polymers of D-glucose and / or non-ionic branched heteropolysaccharides, sunscreens and optionally specific alkanes / alkoxydiols. The composition unexpectedly provides an improved sun protection factor (SPF) as well as an improved UVA protection factor (UVA-PF) when applied to the skin to further enhance the sun protection capability of the composition. technical background [0002] Ultraviolet radiation is harmful to the skin. Direct lesions can be in the form of erythema. More long-term is the concern of triggering cancerous growths. For these reasons, photoprotectants known as sunscreens have been incorporated into cosmetics. [0003] Organic sunscreens have some drawbacks. Sunscreens are known to degrade themselves under the influence of UV radiation. Photostability may only be a matter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/73A61K8/49A61K8/34A61K8/37A61Q17/04
CPCA61K8/345A61K8/37A61K8/4946A61K8/73A61K8/737A61K2800/244A61Q17/04A61K8/31A61K8/34A61K8/35A61K8/731
Inventor V·欧S·A·马迪森
Owner UNILEVER NV
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