Sunscreen product comprising hydroxyapatite as physical filter

A technology of hydroxyapatite and light filter, applied in skin care preparations, medical preparations containing active ingredients, cosmetics, etc., can solve the problem of no sun protection factor

Active Publication Date: 2012-02-22
意大利嘉利化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Another material that has been investigated is micronized talc, however it has been shown to be ineffective even at fairly high proportions (eg, 25%), without any improvement in sun protection factor (SPF)

Method used

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  • Sunscreen product comprising hydroxyapatite as physical filter
  • Sunscreen product comprising hydroxyapatite as physical filter
  • Sunscreen product comprising hydroxyapatite as physical filter

Examples

Experimental program
Comparison scheme
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Embodiment approach

[0039] According to one embodiment, the composition of the invention also comprises finely divided organic particles such as methylene bis-benzotriazolyltetramethylbutylphenol (MBBT) and bis-ethylhexyloxyphenol methoxybenzene base triazine (BEMT). The presence of these fine organic particles is particularly advantageous since they are able to filter UVA radiation.

[0040] The cosmetic composition according to the invention may also comprise ammonium, triethanolammonium or monoethanolammonium salts in the form of acetates, lactates, glycolates, gluconates, tartrates or alkyl phosphates, and mixture.

[0041] The cosmetic composition of the present invention can be in the form of sunscreen cream, sunscreen gel, sunscreen lotion, sunscreen spray, sunscreen lotion, fluid sunscreen lotion, sunscreen gel, sunscreen powder, sunscreen lotion, sunscreen mask, sunscreen gel (lipo-gel) ), sun sticks, foundations with sunscreen, sunscreens, sun pastes, products for skin lightening and ...

Embodiment 1

[0049] Four compositions were prepared in emulsion form.

[0050] The first is a comparative composition without a physical sunscreen.

[0051] The second is a comparative composition additionally comprising 5% by weight of titanium dioxide.

[0052] The third is a comparative composition additionally comprising 5% by weight of hydroxyapatite.

[0053] The fourth is the above composition, but containing 5% by weight of hydroxyapatite and additionally containing zinc lactate, magnesium lactate, manganese lactate.

[0054] The four compositions are given as follows:

[0055]

[0056]

[0057]

[0058]

[0059]

[0060] SPF evaluation

[0061] For all compositions prepared above, the SPF, ie Sun Protection Factor, was assessed by the COLIPA method (the procedure described in COLIPA International Sun Protection Factor (SPF) document 001-2003).

[0062] If according to figure 1 It can be seen that the average SPF for the first comparative composition is 50, the ...

Embodiment 2

[0069] Four cosmetic compositions, specifically body sunscreens, were prepared.

[0070] The first lotion is a comparison product without a physical sunscreen.

[0071] The second was a comparative emulsion which additionally contained 4% by weight of titanium dioxide.

[0072] The third was a comparative emulsion which additionally contained 4% by weight of hydroxyapatite.

[0073] The fourth was the above emulsion, but containing 4% by weight of hydroxyapatite, additionally containing zinc lactate, magnesium lactate, manganese lactate.

[0074] The four products are given as follows:

[0075]

[0076]

[0077]

[0078]

[0079]

[0080]

[0081] SPF evaluation

[0082] For all cosmetic compositions prepared above, SPF was assessed by the COLIPA method (the procedure described in COLIPA International Sun Protection Factor (SPF) document 001-2003).

[0083] If according to figure 1 It is seen that the average SPF for the first comparative product is 30...

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Abstract

The present invention concerns the use of hydroxyapatite as the physical sunscreening agent in synergistic association with at least one chemical sunscreening agent, in products designed for application to the skin in order to protect the same from solar UV radiation. Particularly, cosmetic compositions are described comprising said sunscreen product having screening capability, high dermal tolerance and a low whitening effect on the skin.

Description

field of invention [0001] The present invention relates to the use of hydroxyapatite as a physical sunscreen in a product designed for application to the skin to protect the skin from the UV radiation of the sun. In particular, cosmetic compositions are described comprising hydroxyapatite as a physical sunscreen having a sunscreening power, high skin tolerance and a lower whitening effect than other physical sunscreens. Background technique [0002] Prolonged exposure to ultraviolet (UV) rays, whether intermittent or chronic, especially in the middle of the day and rest periods without proper skin care or promotion of skin cell regeneration, are factors that can cause a variety of skin diseases, Such skin diseases are erythema, papule, vesicle, pigmentation, elastosis, epidermal breakdown, photoaging and photo-carcinogenesis. However, on the one hand it is known that excessive irradiation can be harmful and dangerous, on the other hand it is also known that skilful and rati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/04A61K8/24A61Q17/04A61K8/19A61K8/26A61K8/27A61K8/36A61K8/362A61K8/368
CPCA61K8/24A61K2800/413A61Q17/04A61Q19/02
Inventor 路易吉·里加诺詹卡洛·加扎尼加詹巴蒂斯塔·拉斯特列利
Owner 意大利嘉利化工有限责任公司
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