Sunscreens

Test for the determination of UVA photoprotection in vivo

Regulatory reference:	ISO 24442:2011
Claim:	UVA protection and PA rating
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Method that is based on the persistent darkening responses of the skin pigmentation of the subjects in order to evaluate the UVA sun protection factor (UVAPF) of the sun product.

Posted in PA rating, UVA protection, Sunscreens, Claim for cosmetics

Test of reduction of SPF caused by salt water

Regulatory reference:	ISO 24444:2010 of 15/11/2010 and Colipa test method 2006 for the determination of the WATER RESISTANCE. Test performed according to modified COLIPA 2005 method
Claim:	Salt water resistant
Application field:	Finished sunscreen products.
Description of the test:	Test performed on 10 volunteers, by comparison of pre-wash and post-wash SPF. The treatment includes two washes, one in salt water, performed by irroration with 1M NaCl solution by a pressureless drop shower, and one in fresh water. If the reduction of protection is greater than 50% the product isn’t considered to be “Salt Water Resistant”.

Posted in Water resistant, Salt water resistant, Sunscreens, Claim for cosmetics

Test of reduction of SPF caused by sand

Regulatory reference:	ISO 24444:2010 of 15/11/2010 and Colipa test method 2006 for SPF.
Claim:	Sand resistant
Application field:	Finished products.
Description of the test:	In vivo test on 10 subjects. Comparison between SPF of sun product and the reduction on protection cause of double sand static contact of 20 minutes in this sequence: contact, techanical cleaning, contact and final mechanical cleaning before the exposure to the solar multiport simulator. If the reduction of protection is mayor than 50% the product isn’t “sand resistant”.

Posted in Sand resistant, Sunscreens, Claim for cosmetics

Preliminary in vitro SPF determination

Regulatory reference:	Proprietary method based on ISO 24444:2010
Claim:	SPF Sun Protection Factor
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Preliminary screening of the sun protection factor, UVA/SPF ratio and critical wavelength of a sunscreen formula.

Posted in SPF Sun Protection Factor, Sunscreens, Claim for cosmetics

In vivo determination of the sun protection factor (SPF)

Regulatory reference:	ISO 24444:2010
Claim:	SPF Sun Protection Factor
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Determination of the sun protection factor (SPF) on healthy volunteer through controlled irradiation and measurement of the erythemal response.

Posted in SPF Sun Protection Factor, Sunscreens, Claim for cosmetics

Preliminary in vitro water resistance test

Regulatory reference:	Proprietary method based on ISO 24443:2012
Claim:	Water resistant
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Determination of the percentage of water resistance of a sunscreen product on PMMA plates with measurements before and after washes in controlled conditions. The preliminary test requires confirmation through in vivo tests.

Posted in Water resistant, Sunscreens, Claim for cosmetics

In vivo water resistance test

Regulatory reference:	ISO 16217/18861
Claim:	Water resistant or Very water resistant
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Determination of the percentage of persistence of the Sun Protection Factor (SPF) on healthy volunteers after washing in controlled conditions.

Posted in Water resistant, Very water resistant, Sunscreens, Claim for cosmetics

In vitro determination of UVA photoprotection – broad spectrum protection

Regulatory reference:	ISO 24443:2012
Claim:	Broad spectrum protection
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Determination of the UVA protection and critical wavelength according to the ISO guideline for broad spectrum protection testing.

Posted in Broad spectrum protection, Sunscreens, Claim for cosmetics

Microscopic analysis of the aggregation of filters

Regulatory reference:	Proprietary method
Claim:	Control of the aggregational state of physical filters
Application field:	Sunscreen creams, sticks and cosmetic products.
Description of the test:	Microscopical analysis and high resolution imaging of the aggregation of physical filters. Includes measurement of the size of aggregates, if present.

Posted in Control of the aggregational state of physical filters, Sunscreens, Claim for cosmetics

Analysis of the protection granted by sunscreens in the high energy visible spectrum (HEV/blue light 400-500 nm)

Regulatory reference:	Proprietary method based on ISO 24443
Claim:	Protects against the high energy visible (HEV) spectrum or Blue light protection
Application field:	Suncreen products.
Description of the test:	Analysis of the absorbance spectrum of a sunscreen product in the HEV spectrum versus blank. Results in terms of absorbance curve and percentage of light blocked in the 400-500 nm specturm.

Posted in Blue light protection, Sunscreens, Protects against the high energy visible (HEV) spectrum, Claim for cosmetics