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Κεντρική σελίδα > Μελέτες αντηλιακών (SPF, UVA, WR)

In vivo determination of the sun protection factor (SPF) according to ISO 24444:2011
(Obtained results equivalent to results obtained in accordance to International sun protection factor (SPF) test method –Colipa 2006)

This EN ISO test method is considered as the reference method within the European Union.
Cosmetics Europe therefore recommends cosmetic manufacturers to use this standard to determine the Sun Protection Factor (SPF).
The level of sun protection provided by sunscreen products (SPF) has been estimated using the erythemal response of the skin to ultraviolet (UV) radiation. The SPF is a ratio calculated from the energies required to induce a minimum erythemal response with and without sunscreen product applied to the skin of human volunteers. An ultraviolet radiation has been usually used from an artificial source.
Samples needed: 5 samples of 50ml

In vitro method for the determination of the UVA protection factor according to ISO 24443:2012
(Obtained results equivalent to results obtained in accordance to Colipa Guidelines-Method for in Vitro Determination of UVA protection, 2011)


This test evaluates if the investigated sunscreen product can absorb in the UV spectrum (UVA+UVB). Scope of this experimental protocol is to measure in vitro the UVA protection of sunscreens.
Firstly, this method provides in vitro UVA protection factors (UVA-PF) which have been shown to correlate well with in vivo UVA-PF values derived from the PPD method (the latter being considered as the in vivo reference). Secondly, the method also provides a means of calculating Critical Wavelength values.
Samples needed: 2 samples of 50ml



Determination of water resistance of a sunscreen product (Colipa Guidelines for Evaluating Sun Product Water Resistance, December 2005) and In vivo determination of the sun protection factor (SPF) according to ISO 24444:2011

                                                             
The level of sun protection is estimated using the sun protection factor or SPF test, which utilises the erythemal response of the skin to ultraviolet (UV) radiation. The SPF is a ratio calculated from the energies required to induce a minimum erythemal response with and without sun product applied to the skin of human volunteers, using ultraviolet radiation usually from an artificial source.

The water resistance is evaluated by measuring the SPF before and after immersion in water (static and wet SPF). The individual value of percentage water resistance retention is calculated for each volunteer and, according to the value obtained, the level of water resistance of the investigated product can be declared: no water resistance, sufficient, fairly good water resistance and very good water resistance.

Samples needed: 8 samples of 50ml

Should you require any further information, please do not hesitate to contact us. We will be happy to hear from you via this website or by telephone or fax.

 
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