The present disclosure relates, according to some embodiments, to a method of determining a quantitatively measured photoprotection of a photoprotective composition, the method comprising: (a) distributing the photoprotective composition in a position in between a drawdown bar and at least one substrate to produce a distributed photoprotective composition; (b) drawing down the distributed photoprotective composition to a thickness on at least one substrate to produce a drawn down sample film; (c) drying the drawn down sample film to produce a dried sample film; (d) measuring a UV absorption of the dried sample film to produce a UV absorption spectrum; (e) determining the quantitatively measured photoprotection of the photoprotective composition from the UV absorption spectrum. The present disclosure relates, according to some embodiments, to a method of determining a quantitatively measured photoprotection of a photoprotective composition, the method comprising: (a) spraying at least one coat of the photoprotective composition to a thickness on at least one surface of a substrate to produce a spray coated substrate sample; (b) drying the spray coated substrate sample to produce a dried sample film; (c) measuring a UV absorption of the dried sample film to produce a UV absorption spectrum; and (d) determining the quantitatively measured photoprotection of the photoprotective composition from the UV absorption spectrum.

The present disclosure relates, according to some embodiments, to a method of determining a quantitatively measured photoprotection of a photoprotective composition, the method comprising: (a) distributing the photoprotective composition in a position in between a drawdown bar and at least one substrate to produce a distributed photoprotective composition; (b) drawing down the distributed photoprotective composition to a thickness on at least one substrate to produce a drawn down sample film; (c) drying the drawn down sample film to produce a dried sample film; (d) measuring a UV absorption of the dried sample film to produce a UV absorption spectrum; (e) determining the quantitatively measured photoprotection of the photoprotective composition from the UV absorption spectrum. The present disclosure relates, according to some embodiments, to a method of determining a quantitatively measured photoprotection of a photoprotective composition, the method comprising: (a) spraying at least one coat of the photoprotective composition to a thickness on at least one surface of a substrate to produce a spray coated substrate sample; (b) drying the spray coated substrate sample to produce a dried sample film; (c) measuring a UV absorption of the dried sample film to produce a UV absorption spectrum; and (d) determining the quantitatively measured photoprotection of the photoprotective composition from the UV absorption spectrum.

Provided are an ultraviolet-sensing sheet, an ultraviolet-sensing set, and an ultraviolet-sensing method, in which color gradation properties which are suitable for detecting an ultraviolet dose are obtained and in which the coloring of an ultraviolet-sensing layer caused by the effect of light other than ultraviolet light is prevented. An ultraviolet-sensing sheet 1 includes: a filter layer 10 that selectively allows transmission of light having a specific wavelength; and an ultraviolet-sensing layer 20 that includes a capsule including a color-forming dye and a photooxidant. It is preferable that the filter layer 10 has a maximum value of the transmittance in a wavelength range of 300 nm or longer and shorter than 380 nm.

Provided are an ultraviolet-sensing sheet, an ultraviolet-sensing set, and an ultraviolet-sensing method, in which color gradation properties which are suitable for detecting an ultraviolet dose are obtained and in which the coloring of an ultraviolet-sensing layer caused by the effect of light other than ultraviolet light is prevented. An ultraviolet-sensing sheet 1 includes: a filter layer 10 that selectively allows transmission of light having a specific wavelength; and an ultraviolet-sensing layer 20 that includes a capsule including a color-forming dye and a photooxidant. It is preferable that the filter layer 10 has a maximum value of the transmittance in a wavelength range of 300 nm or longer and shorter than 380 nm.

A radiation sensing material is disclosed. The radiation sensing material is represented by the following formula (I):

(M1.sub.8-2aM2.sub.a)(M.sub.14-(4b/3)M.sub.b)O.sub.24(X.sub.2-dcdX.sub.n.sup.c?):M formula (I)

Further is disclosed a device and uses of the radiation sensing material represented by the formula (I).

A device for detecting exposure to light includes: a photo-responsive layer including a photochromic material; a skin-mimicking cover layer covering a first side of the photo-responsive layer; and an adhesive layer configured to couple a second side of the photo-responsive layer opposite the first side to a surface.

A device for detecting exposure to light includes: a photo-responsive layer including a photochromic material; a skin-mimicking cover layer covering a first side of the photo-responsive layer; and an adhesive layer configured to couple a second side of the photo-responsive layer opposite the first side to a surface.

A hanger can include an elongated body defining: a first end defining at least one aperture; and a second end, the first end and the second end defined at opposite ends of the hanger along a longitudinal direction, the hanger being configured to support a hanging object at the second end; and a UV indicator.

A hanger can include an elongated body defining: a first end defining at least one aperture; and a second end, the first end and the second end defined at opposite ends of the hanger along a longitudinal direction, the hanger being configured to support a hanging object at the second end; and a UV indicator.

The invention relates to a container for sunscreen agent in which the sunscreen agent has a specific predetermined sun-protection factor, comprising a sealing device (2) by which the container (1) can be closed to make its opening (8) completely sealed, the container (1) being provided with at least one sun sensor (3) arranged to indicate the current UV intensity by changing its hue depending on the UV intensity of the radiation striking the sensor (3), said container further comprising a color-reference range (4) for comparative reading of the hue of the sensor to enable the determination of UV intensity, and time indicator (50) for determining the period of time during which a person of a specific skin type can expose his or her skin to solar radiation at said determined UV intensity without sunburn arising, provided said person has applied the sunscreen agent from the container to the skin, said sun sensor (3) being arranged as an integral part of the container (1) and being positioned such that it is completely covered by the sealing device (2) when the sealing device (2) is sealed.