| Regulatory reference: | ISO 24444:2019. |
| 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 than 50% the product isn’t considered to be “Salt Water Resistant”. |
| 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. |
| Regulatory reference: | ISO 16217 and ISO 18861 |
| Claim: | Water resistant or Highly 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. |