Apparatus and method for measuring the effectiveness of a sunscreen composition
First Claim
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1. A method of protecting an epidermis from harmful exposure to ultraviolet light, the epidermis having a texture and an absorbent character, the method comprising the steps of:
- providing a base supporting an ultraviolet light-sensitive layer that changes color when exposed to ultraviolet light, the layer having a texture and an absorbent character substantially similar to the texture and absorbent character of an epidermis;
mounting the base about and adjacent the epidermis in a wrapped condition;
coating the epidermis and the layer with a sunscreen composition; and
re-coating the epidermis and the layer with the sunscreen composition when the layer changes color.
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Abstract
An apparatus for measuring the effectiveness of a sunscreen composition applied to protect an epidermis from harmful exposure to ultraviolet light, the epidermis having a texture and an absorbent character, the apparatus comprising an ultraviolet light-sensitive layer for changing color when exposed to ultraviolet light, the layer receivable adjacent the epidermis and having a texture and an absorbent character substantially similar to the texture and absorbent character of the epidermis.
20 Citations
4 Claims
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1. A method of protecting an epidermis from harmful exposure to ultraviolet light, the epidermis having a texture and an absorbent character, the method comprising the steps of:
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providing a base supporting an ultraviolet light-sensitive layer that changes color when exposed to ultraviolet light, the layer having a texture and an absorbent character substantially similar to the texture and absorbent character of an epidermis; mounting the base about and adjacent the epidermis in a wrapped condition; coating the epidermis and the layer with a sunscreen composition; and re-coating the epidermis and the layer with the sunscreen composition when the layer changes color. - View Dependent Claims (2)
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3. Apparatus for measuring the effectiveness of a sunscreen composition applied to protect an epidermis from harmful exposure to ultraviolet light, the epidermis having a texture and an absorbent character, the apparatus comprising:
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a base supporting an ultraviolet light-sensitive material that changes color when exposed to ultraviolet light, the layer having a texture and an absorbent character substantially similar to the texture and absorbent character of an epidermis; and an engagement assembly for engaging the base about and adjacent the epidermis in a wrapped condition.
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4. A method of protecting an epidermis from harmful exposure to ultraviolet light, the epidermis having a texture and an absorbent character, the method comprising the steps of:
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providing a base having a first major surface supporting adhesive and a second major surface supporting an ultraviolet light-sensitive layer that changes color when exposed to ultraviolet light, the layer having a texture and an absorbent character substantially similar to the texture and absorbent character of an epidermis; engaging the adhesive to one of to the epidermis and adjacent the epidermis; coating the epidermis and the layer with a sunscreen composition; and re-coating the epidermis and the layer with the sunscreen composition when the layer changes color.
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Specification